diff --git a/src/parser_yin.h b/src/parser_yin.h
index 816078b..7faf7e1 100644
--- a/src/parser_yin.h
+++ b/src/parser_yin.h
@@ -25,8 +25,6 @@
 extern const char *const yin_attr_list[];
 #define yin_attr2str(STMT) yin_attr_list[STMT]
 
-#define YIN_NS_URI "urn:ietf:params:xml:ns:yang:yin:1"
-
 #define VALID_VALS1 " Only valid value is \"%s\"."
 #define VALID_VALS2 " Valid values are \"%s\" and \"%s\"."
 #define VALID_VALS3 " Valid values are \"%s\", \"%s\" and \"%s\"."
diff --git a/src/printer_internal.h b/src/printer_internal.h
index 7d0e312..973eb20 100644
--- a/src/printer_internal.h
+++ b/src/printer_internal.h
@@ -101,6 +101,15 @@
 LY_ERR yang_print_compiled(struct lyout *out, const struct lys_module *module);
 
 /**
+ * @brief YIN printer of the parsed schemas. Full YIN printer.
+ *
+ * @param[in] out Output specification.
+ * @param[in] module Schema to be printed (the parsed member is used).
+ * @return LY_ERR value, number of the printed bytes is updated in lyout::printed.
+ */
+LY_ERR yin_print_parsed(struct lyout *out, const struct lys_module *module);
+
+/**
  * @brief XML printer of the YANG data.
  *
  * @param[in] out Output specification.
diff --git a/src/printer_schema.c b/src/printer_schema.c
index c07ea79..bacf136 100644
--- a/src/printer_schema.c
+++ b/src/printer_schema.c
@@ -45,12 +45,10 @@
     case LYS_OUT_YANG_COMPILED:
         ret = yang_print_compiled(out, module);
         break;
-    /* TODO not yet implemented
     case LYS_OUT_YIN:
-        lys_disable_deviations((struct lys_module *)module);
-        ret = yin_print_model(out, module);
-        lys_enable_deviations((struct lys_module *)module);
+        ret = yin_print_parsed(out, module);
         break;
+    /* TODO not yet implemented
     case LYS_OUT_TREE:
         ret = tree_print_model(out, module, target_node, line_length, options);
         break;
diff --git a/src/printer_yin.c b/src/printer_yin.c
new file mode 100644
index 0000000..7592f02
--- /dev/null
+++ b/src/printer_yin.c
@@ -0,0 +1,1549 @@
+/**
+ * @file printer_yin.c
+ * @author Fred Gan <ganshaolong@vip.qq.com>
+ * @brief YIN printer
+ *
+ * Copyright (c) 2015 - 2019 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#include "common.h"
+
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "log.h"
+#include "plugins_exts.h"
+#include "printer_internal.h"
+#include "tree.h"
+#include "tree_schema.h"
+#include "tree_schema_internal.h"
+#include "plugins_types.h"
+#include "xpath.h"
+#include "xml.h"
+
+/**
+ * @brief YIN printer context.
+ */
+struct ypr_ctx {
+    struct lyout *out;               /**< output specification */
+    unsigned int level;              /**< current indentation level: 0 - no formatting, >= 1 indentation levels */
+    const struct lys_module *module; /**< schema to print */
+};
+
+#define LEVEL ctx->level             /**< current level */
+#define INDENT (LEVEL)*2,""          /**< indentation parameters for printer functions */
+
+static void yprp_extension_instances(struct ypr_ctx *ctx, LYEXT_SUBSTMT substmt, uint8_t substmt_index,
+                               struct lysp_ext_instance *ext, int *flag, unsigned int count);
+
+static void
+ypr_open(struct ypr_ctx *ctx, const char *elem_name, const char *attr_name, const char *attr_value,  int flag)
+{
+    ly_print(ctx->out, "%*s<%s", INDENT, elem_name);
+
+    if (attr_name) {
+        ly_print(ctx->out, " %s=\"", attr_name);
+        lyxml_dump_text(ctx->out, attr_value, 1);
+        ly_print(ctx->out, "\"%s", flag == -1 ? "/>\n" : flag == 1 ? ">\n" : "");
+    } else if (flag) {
+        ly_print(ctx->out, flag == -1 ? "/>\n" : ">\n");
+    }
+}
+
+static void
+ypr_close(struct ypr_ctx *ctx, const char *elem_name, int flag)
+{
+    if (flag) {
+        ly_print(ctx->out, "%*s</%s>\n", INDENT, elem_name);
+    } else {
+        ly_print(ctx->out, "/>\n");
+    }
+}
+
+/*
+ * par_close_flag
+ * 0 - parent not yet closed, printing >\n, setting flag to 1
+ * 1 or NULL - parent already closed, do nothing
+ */
+static void
+ypr_close_parent(struct ypr_ctx *ctx, int *par_close_flag)
+{
+    if (par_close_flag && !(*par_close_flag)) {
+        (*par_close_flag) = 1;
+        ly_print(ctx->out, ">\n");
+    }
+}
+
+static void
+ypr_yin_arg(struct ypr_ctx *ctx, const char *arg, const char *text)
+{
+    ly_print(ctx->out, "%*s<%s>", INDENT, arg);
+    lyxml_dump_text(ctx->out, text, 0);
+    ly_print(ctx->out, "</%s>\n", arg);
+}
+
+
+
+static void
+ypr_substmt(struct ypr_ctx *ctx, LYEXT_SUBSTMT substmt, uint8_t substmt_index, const char *text, void *ext)
+{
+    unsigned int u;
+    int extflag = 0;
+
+    if (!text) {
+        /* nothing to print */
+        return;
+    }
+
+    if (ext_substmt_info[substmt].flags & SUBST_FLAG_YIN) {
+        extflag = 1;
+        ypr_open(ctx, ext_substmt_info[substmt].name, NULL, NULL, extflag);
+    } else {
+        ypr_open(ctx, ext_substmt_info[substmt].name, ext_substmt_info[substmt].arg, text, extflag);
+    }
+
+    LEVEL++;
+    LY_ARRAY_FOR(ext, u) {
+        if (((struct lysp_ext_instance*)ext)[u].insubstmt != substmt || ((struct lysp_ext_instance*)ext)[u].insubstmt_index != substmt_index) {
+            continue;
+        }
+        yprp_extension_instances(ctx, substmt, substmt_index, &((struct lysp_ext_instance*)ext)[u], &extflag, 1);
+    }
+
+    /* argument as yin-element */
+    if (ext_substmt_info[substmt].flags & SUBST_FLAG_YIN) {
+        ypr_yin_arg(ctx, ext_substmt_info[substmt].arg, text);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, ext_substmt_info[substmt].name, extflag);
+}
+
+static void
+ypr_unsigned(struct ypr_ctx *ctx, LYEXT_SUBSTMT substmt, uint8_t substmt_index, void *exts, unsigned int attr_value)
+{
+    char *str;
+    if (asprintf(&str, "%u", attr_value) == -1) {
+        LOGMEM(ctx->module->ctx);
+        ctx->out->status = LY_EMEM;
+        return;
+    }
+    ypr_substmt(ctx, substmt, substmt_index, str, exts);
+    free(str);
+}
+
+static void
+ypr_signed(struct ypr_ctx *ctx, LYEXT_SUBSTMT substmt, uint8_t substmt_index, void *exts, signed int attr_value)
+{
+    char *str;
+
+    if (asprintf(&str, "%d", attr_value) == -1) {
+        LOGMEM(ctx->module->ctx);
+        ctx->out->status = LY_EMEM;
+        return;
+    }
+    ypr_substmt(ctx, substmt, substmt_index, str, exts);
+    free(str);
+}
+
+static void
+yprp_revision(struct ypr_ctx *ctx, const struct lysp_revision *rev)
+{
+    if (rev->dsc || rev->ref || rev->exts) {
+        ypr_open(ctx, "revision", "date", rev->date, 1);
+        LEVEL++;
+        yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, rev->exts, NULL, 0);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_DESCRIPTION, 0, rev->dsc, rev->exts);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_REFERENCE, 0, rev->ref, rev->exts);
+        LEVEL--;
+        ypr_close(ctx, "revision", 1);
+    } else {
+        ypr_open(ctx, "revision", "date", rev->date, -1);
+    }
+}
+
+static void
+ypr_mandatory(struct ypr_ctx *ctx, uint16_t flags, void *exts, int *flag)
+{
+    if (flags & LYS_MAND_MASK) {
+        ypr_close_parent(ctx, flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_MANDATORY, 0, (flags & LYS_MAND_TRUE) ? "true" : "false", exts);
+    }
+}
+
+static void
+ypr_config(struct ypr_ctx *ctx, uint16_t flags, void *exts, int *flag)
+{
+    if (flags & LYS_CONFIG_MASK) {
+        ypr_close_parent(ctx, flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_CONFIG, 0, (flags & LYS_CONFIG_W) ? "true" : "false", exts);
+    }
+}
+
+static void
+ypr_status(struct ypr_ctx *ctx, uint16_t flags, void *exts, int *flag)
+{
+    const char *status = NULL;
+
+    if (flags & LYS_STATUS_CURR) {
+        ypr_close_parent(ctx, flag);
+        status = "current";
+    } else if (flags & LYS_STATUS_DEPRC) {
+        ypr_close_parent(ctx, flag);
+        status = "deprecated";
+    } else if (flags & LYS_STATUS_OBSLT) {
+        ypr_close_parent(ctx, flag);
+        status = "obsolete";
+    }
+
+    ypr_substmt(ctx, LYEXT_SUBSTMT_STATUS, 0, status, exts);
+}
+
+static void
+ypr_description(struct ypr_ctx *ctx, const char *dsc, void *exts, int *flag)
+{
+    if (dsc) {
+        ypr_close_parent(ctx, flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_DESCRIPTION, 0, dsc, exts);
+    }
+}
+
+static void
+ypr_reference(struct ypr_ctx *ctx, const char *ref, void *exts, int *flag)
+{
+    if (ref) {
+        ypr_close_parent(ctx, flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_REFERENCE, 0, ref, exts);
+    }
+}
+
+static void
+yprp_iffeatures(struct ypr_ctx *ctx, const char **iff, struct lysp_ext_instance *exts, int *flag)
+{
+    unsigned int u;
+    int extflag;
+
+    LY_ARRAY_FOR(iff, u) {
+        ypr_close_parent(ctx, flag);
+        extflag = 0;
+
+        ly_print(ctx->out, "%*s<if-feature name=\"%s",  INDENT, iff[u]);
+
+        /* extensions */
+        LEVEL++;
+        LY_ARRAY_FOR(exts, u) {
+            if (exts[u].insubstmt != LYEXT_SUBSTMT_IFFEATURE || exts[u].insubstmt_index != u) {
+                continue;
+            }
+            yprp_extension_instances(ctx, LYEXT_SUBSTMT_IFFEATURE, u, &exts[u], &extflag, 1);
+        }
+        LEVEL--;
+        ly_print(ctx->out, "\"/>\n");
+    }
+}
+
+static void
+yprp_extension(struct ypr_ctx *ctx, const struct lysp_ext *ext)
+{
+    int flag = 0, flag2 = 0;
+    unsigned int i;
+
+    ypr_open(ctx, "extension", "name", ext->name, flag);
+    LEVEL++;
+
+    if (ext->exts) {
+        ypr_close_parent(ctx, &flag);
+        yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, ext->exts, &flag, 0);
+    }
+
+    if (ext->argument) {
+        ypr_close_parent(ctx, &flag);
+        ypr_open(ctx, "argument", "name", ext->argument, flag2);
+
+        LEVEL++;
+        if (ext->exts) {
+            i = -1;
+            while ((i = lysp_ext_instance_iter(ext->exts, i + 1, LYEXT_SUBSTMT_ARGUMENT)) != LY_ARRAY_SIZE(ext->exts)) {
+                ypr_close_parent(ctx, &flag2);
+                yprp_extension_instances(ctx, LYEXT_SUBSTMT_ARGUMENT, 0, &ext->exts[i], &flag2, 1);
+            }
+        }
+        if ((ext->flags & LYS_YINELEM_MASK) ||
+                (ext->exts && lysp_ext_instance_iter(ext->exts, 0, LYEXT_SUBSTMT_YINELEM) != LY_ARRAY_SIZE(ext->exts))) {
+            ypr_close_parent(ctx, &flag2);
+            ypr_substmt(ctx, LYEXT_SUBSTMT_YINELEM, 0, (ext->flags & LYS_YINELEM_TRUE) ? "true" : "false", ext->exts);
+        }
+        LEVEL--;
+        ypr_close(ctx, "argument", flag2);
+    }
+
+    ypr_status(ctx, ext->flags, ext->exts, &flag);
+    ypr_description(ctx, ext->dsc, ext->exts, &flag);
+    ypr_reference(ctx, ext->ref, ext->exts, &flag);
+
+    LEVEL--;
+    ypr_close(ctx, "extension", flag);
+}
+
+static void
+yprp_feature(struct ypr_ctx *ctx, const struct lysp_feature *feat)
+{
+    int flag = 0;
+
+    ypr_open(ctx, "feature", "name", feat->name, flag);
+    LEVEL++;
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, feat->exts, &flag, 0);
+    yprp_iffeatures(ctx, feat->iffeatures, feat->exts, &flag);
+    ypr_status(ctx, feat->flags, feat->exts, &flag);
+    ypr_description(ctx, feat->dsc, feat->exts, &flag);
+    ypr_reference(ctx, feat->ref, feat->exts, &flag);
+    LEVEL--;
+    ypr_close(ctx, "feature", flag);
+}
+
+static void
+yprp_identity(struct ypr_ctx *ctx, const struct lysp_ident *ident)
+{
+    int flag = 0;
+    unsigned int u;
+
+    ypr_open(ctx, "identity", "name", ident->name, flag);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, ident->exts, &flag, 0);
+    yprp_iffeatures(ctx, ident->iffeatures, ident->exts, &flag);
+
+    LY_ARRAY_FOR(ident->bases, u) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_BASE, u, ident->bases[u], ident->exts);
+    }
+
+    ypr_status(ctx, ident->flags, ident->exts, &flag);
+    ypr_description(ctx, ident->dsc, ident->exts, &flag);
+    ypr_reference(ctx, ident->ref, ident->exts, &flag);
+
+    LEVEL--;
+    ypr_close(ctx, "identity", flag);
+}
+
+static void
+yprp_restr(struct ypr_ctx *ctx, const struct lysp_restr *restr, const char *name, const char *attr, int *flag)
+{
+    (void)flag;
+    int inner_flag = 0;
+
+    if (!restr) {
+        return;
+    }
+
+    ly_print(ctx->out, "%*s<%s %s=\"", INDENT, name, attr);
+    lyxml_dump_text(ctx->out, (restr->arg[0] != 0x15 && restr->arg[0] != 0x06) ? restr->arg : &restr->arg[1], 1);
+    ly_print(ctx->out, "\"");
+
+    LEVEL++;
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, restr->exts, &inner_flag, 0);
+    if (restr->arg[0] == 0x15) {
+        ypr_close_parent(ctx, &inner_flag);
+        /* special byte value in pattern's expression: 0x15 - invert-match, 0x06 - match */
+        ypr_substmt(ctx, LYEXT_SUBSTMT_MODIFIER, 0, "invert-match", restr->exts);
+    }
+    if (restr->emsg) {
+        ypr_close_parent(ctx, &inner_flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_ERRMSG, 0, restr->emsg, restr->exts);
+    }
+    if (restr->eapptag) {
+        ypr_close_parent(ctx, &inner_flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_ERRTAG, 0, restr->eapptag, restr->exts);
+    }
+    ypr_description(ctx, restr->dsc, restr->exts, &inner_flag);
+    ypr_reference(ctx, restr->ref, restr->exts, &inner_flag);
+
+    LEVEL--;
+    ypr_close(ctx, name, inner_flag);
+}
+
+static void
+yprp_when(struct ypr_ctx *ctx, struct lysp_when *when, int *flag)
+{
+    int inner_flag = 0;
+    (void)flag;
+
+    if (!when) {
+        return;
+    }
+
+    ly_print(ctx->out, "%*s<when condition=\"", INDENT);
+    lyxml_dump_text(ctx->out, when->cond, 1);
+    ly_print(ctx->out, "\"");
+
+    LEVEL++;
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, when->exts, &inner_flag, 0);
+    ypr_description(ctx, when->dsc, when->exts, &inner_flag);
+    ypr_reference(ctx, when->ref, when->exts, &inner_flag);
+    LEVEL--;
+    ypr_close(ctx, "when", inner_flag);
+}
+
+static void
+yprp_enum(struct ypr_ctx *ctx, const struct lysp_type_enum *items, LY_DATA_TYPE type, int *flag)
+{
+    unsigned int u;
+    int inner_flag;
+    (void)flag;
+
+    LY_ARRAY_FOR(items, u) {
+        if (type == LY_TYPE_BITS) {
+            ly_print(ctx->out, "%*s<bit name=\"", INDENT);
+            lyxml_dump_text(ctx->out, items[u].name, 1);
+            ly_print(ctx->out, "\"");
+        } else { /* LY_TYPE_ENUM */
+            ly_print(ctx->out, "%*s<enum name=\"", INDENT);
+            lyxml_dump_text(ctx->out, items[u].name, 1);
+            ly_print(ctx->out, "\"");
+        }
+        inner_flag = 0;
+        LEVEL++;
+        yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, items[u].exts, &inner_flag, 0);
+        yprp_iffeatures(ctx, items[u].iffeatures, items[u].exts, &inner_flag);
+        if (items[u].flags & LYS_SET_VALUE) {
+            if (type == LY_TYPE_BITS) {
+                ypr_close_parent(ctx, &inner_flag);
+                ypr_unsigned(ctx, LYEXT_SUBSTMT_POSITION, 0, items[u].exts, items[u].value);
+            } else { /* LY_TYPE_ENUM */
+                ypr_close_parent(ctx, &inner_flag);
+                ypr_signed(ctx, LYEXT_SUBSTMT_VALUE, 0, items[u].exts, items[u].value);
+            }
+        }
+        ypr_status(ctx, items[u].flags, items[u].exts, &inner_flag);
+        ypr_description(ctx, items[u].dsc, items[u].exts, &inner_flag);
+        ypr_reference(ctx, items[u].ref, items[u].exts, &inner_flag);
+        LEVEL--;
+        ypr_close(ctx, type == LY_TYPE_BITS ? "bit" : "enum", inner_flag);
+    }
+}
+
+static void
+yprp_type(struct ypr_ctx *ctx, const struct lysp_type *type)
+{
+    if (!ctx || !type) {
+        return;
+    }
+
+    unsigned int u;
+    int flag = 0;
+
+    ypr_open(ctx, "type", "name", type->name, flag);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, type->exts, &flag, 0);
+
+    if (type->range || type->length || type->patterns || type->bits || type->enums) {
+        ypr_close_parent(ctx, &flag);
+    }
+    yprp_restr(ctx, type->range, "range", "value", &flag);
+    yprp_restr(ctx, type->length, "length", "value", &flag);
+    LY_ARRAY_FOR(type->patterns, u) {
+        yprp_restr(ctx, &type->patterns[u], "pattern", "value", &flag);
+    }
+    yprp_enum(ctx, type->bits, LY_TYPE_BITS, &flag);
+    yprp_enum(ctx, type->enums, LY_TYPE_ENUM, &flag);
+
+    if (type->path) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_PATH, 0, type->path, type->exts);
+    }
+    if (type->flags & LYS_SET_REQINST) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_REQINSTANCE, 0, type->require_instance ? "true" : "false", type->exts);
+    }
+    if (type->flags & LYS_SET_FRDIGITS) {
+        ypr_close_parent(ctx, &flag);
+        ypr_unsigned(ctx, LYEXT_SUBSTMT_FRACDIGITS, 0, type->exts, type->fraction_digits);
+    }
+    LY_ARRAY_FOR(type->bases, u) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_BASE, u, type->bases[u], type->exts);
+    }
+    LY_ARRAY_FOR(type->types, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_type(ctx, &type->types[u]);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "type", flag);
+}
+
+static void
+yprp_typedef(struct ypr_ctx *ctx, const struct lysp_tpdf *tpdf)
+{
+    LYOUT_CHECK(ctx->out);
+
+    ypr_open(ctx, "typedef", "name", tpdf->name, 1);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, tpdf->exts, NULL, 0);
+
+    yprp_type(ctx, &tpdf->type);
+
+    if (tpdf->units) {
+        ypr_substmt(ctx, LYEXT_SUBSTMT_UNITS, 0, tpdf->units, tpdf->exts);
+    }
+    if (tpdf->dflt) {
+        ypr_substmt(ctx, LYEXT_SUBSTMT_DEFAULT, 0, tpdf->dflt, tpdf->exts);
+    }
+
+    ypr_status(ctx, tpdf->flags, tpdf->exts, NULL);
+    ypr_description(ctx, tpdf->dsc, tpdf->exts, NULL);
+    ypr_reference(ctx, tpdf->ref, tpdf->exts, NULL);
+
+    LEVEL--;
+    ypr_close(ctx, "typedef", 1);
+}
+
+static void yprp_node(struct ypr_ctx *ctx, const struct lysp_node *node);
+static void yprp_action(struct ypr_ctx *ctx, const struct lysp_action *action);
+
+static void
+yprp_grouping(struct ypr_ctx *ctx, const struct lysp_grp *grp)
+{
+    unsigned int u;
+    int flag = 0;
+    struct lysp_node *data;
+
+    LYOUT_CHECK(ctx->out);
+
+    ypr_open(ctx, "grouping", "name", grp->name, flag);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, grp->exts, &flag, 0);
+    ypr_status(ctx, grp->flags, grp->exts, &flag);
+    ypr_description(ctx, grp->dsc, grp->exts, &flag);
+    ypr_reference(ctx, grp->ref, grp->exts, &flag);
+
+    LY_ARRAY_FOR(grp->typedefs, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_typedef(ctx, &grp->typedefs[u]);
+    }
+
+    LY_ARRAY_FOR(grp->groupings, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_grouping(ctx, &grp->groupings[u]);
+    }
+
+    LY_LIST_FOR(grp->data, data) {
+        ypr_close_parent(ctx, &flag);
+        yprp_node(ctx, data);
+    }
+
+    LY_ARRAY_FOR(grp->actions, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_action(ctx, &grp->actions[u]);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "grouping", flag);
+}
+
+static void
+yprp_inout(struct ypr_ctx *ctx, const struct lysp_action_inout *inout, int *flag)
+{
+    unsigned int u;
+    struct lysp_node *data;
+
+    if (!inout->nodetype) {
+        /* nodetype not set -> input/output is empty */
+        return;
+    }
+    ypr_close_parent(ctx, flag);
+
+    ypr_open(ctx, (inout->nodetype == LYS_INPUT ? "input" : "output"), NULL, NULL, *flag);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, inout->exts, NULL, 0);
+    LY_ARRAY_FOR(inout->musts, u) {
+        yprp_restr(ctx, &inout->musts[u], "must", "condition", NULL);
+    }
+    LY_ARRAY_FOR(inout->typedefs, u) {
+        yprp_typedef(ctx, &inout->typedefs[u]);
+    }
+    LY_ARRAY_FOR(inout->groupings, u) {
+        yprp_grouping(ctx, &inout->groupings[u]);
+    }
+
+    LY_LIST_FOR(inout->data, data) {
+        yprp_node(ctx, data);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, (inout->nodetype == LYS_INPUT ? "input" : "output"), 1);
+}
+
+static void
+yprp_notification(struct ypr_ctx *ctx, const struct lysp_notif *notif)
+{
+    unsigned int u;
+    int flag = 0;
+    struct lysp_node *data;
+
+    LYOUT_CHECK(ctx->out);
+
+    ypr_open(ctx, "notification", "name", notif->name, flag);
+
+    LEVEL++;
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, notif->exts, &flag, 0);
+    yprp_iffeatures(ctx, notif->iffeatures, notif->exts, &flag);
+
+    LY_ARRAY_FOR(notif->musts, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_restr(ctx, &notif->musts[u], "must", "condition", &flag);
+    }
+    ypr_status(ctx, notif->flags, notif->exts, &flag);
+    ypr_description(ctx, notif->dsc, notif->exts, &flag);
+    ypr_reference(ctx, notif->ref, notif->exts, &flag);
+
+    LY_ARRAY_FOR(notif->typedefs, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_typedef(ctx, &notif->typedefs[u]);
+    }
+
+    LY_ARRAY_FOR(notif->groupings, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_grouping(ctx, &notif->groupings[u]);
+    }
+
+    LY_LIST_FOR(notif->data, data) {
+        ypr_close_parent(ctx, &flag);
+        yprp_node(ctx, data);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "notification", flag);
+}
+
+static void
+yprp_action(struct ypr_ctx *ctx, const struct lysp_action *action)
+{
+    unsigned int u;
+    int flag = 0;
+
+    LYOUT_CHECK(ctx->out);
+
+    ypr_open(ctx, action->parent ? "action" : "rpc", "name", action->name, flag);
+
+    LEVEL++;
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, action->exts, &flag, 0);
+    yprp_iffeatures(ctx, action->iffeatures, action->exts, &flag);
+    ypr_status(ctx, action->flags, action->exts, &flag);
+    ypr_description(ctx, action->dsc, action->exts, &flag);
+    ypr_reference(ctx, action->ref, action->exts, &flag);
+
+    LY_ARRAY_FOR(action->typedefs, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_typedef(ctx, &action->typedefs[u]);
+    }
+
+    LY_ARRAY_FOR(action->groupings, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_grouping(ctx, &action->groupings[u]);
+    }
+
+    yprp_inout(ctx, &action->input, &flag);
+    yprp_inout(ctx, &action->output, &flag);
+
+    LEVEL--;
+    ypr_close(ctx, action->parent ? "action" : "rpc", flag);
+}
+
+static void
+yprp_node_common1(struct ypr_ctx *ctx, const struct lysp_node *node, int *flag)
+{
+    ypr_open(ctx, lys_nodetype2str(node->nodetype), "name", node->name, *flag);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, node->exts, flag, 0);
+    yprp_when(ctx, node->when, flag);
+    yprp_iffeatures(ctx, node->iffeatures, node->exts, flag);
+}
+
+static void
+yprp_node_common2(struct ypr_ctx *ctx, const struct lysp_node *node, int *flag)
+{
+    ypr_config(ctx, node->flags, node->exts, flag);
+    if (node->nodetype & (LYS_CHOICE | LYS_LEAF | LYS_ANYDATA)) {
+        ypr_mandatory(ctx, node->flags, node->exts, flag);
+    }
+    ypr_status(ctx, node->flags, node->exts, flag);
+    ypr_description(ctx, node->dsc, node->exts, flag);
+    ypr_reference(ctx, node->ref, node->exts, flag);
+}
+
+static void
+yprp_container(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    unsigned int u;
+    int flag = 0;
+    struct lysp_node *child;
+    struct lysp_node_container *cont = (struct lysp_node_container *)node;
+
+    yprp_node_common1(ctx, node, &flag);
+
+    LY_ARRAY_FOR(cont->musts, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_restr(ctx, &cont->musts[u], "must", "condition", &flag);
+    }
+    if (cont->presence) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_PRESENCE, 0, cont->presence, cont->exts);
+    }
+
+    yprp_node_common2(ctx, node, &flag);
+
+    LY_ARRAY_FOR(cont->typedefs, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_typedef(ctx, &cont->typedefs[u]);
+    }
+
+    LY_ARRAY_FOR(cont->groupings, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_grouping(ctx, &cont->groupings[u]);
+    }
+
+    LY_LIST_FOR(cont->child, child) {
+        ypr_close_parent(ctx, &flag);
+        yprp_node(ctx, child);
+    }
+
+    LY_ARRAY_FOR(cont->actions, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_action(ctx, &cont->actions[u]);
+    }
+
+    LY_ARRAY_FOR(cont->notifs, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_notification(ctx, &cont->notifs[u]);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "container", flag);
+}
+
+static void
+yprp_case(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    int flag = 0;
+    struct lysp_node *child;
+    struct lysp_node_case *cas = (struct lysp_node_case *)node;
+
+    yprp_node_common1(ctx, node, &flag);
+    yprp_node_common2(ctx, node, &flag);
+
+    LY_LIST_FOR(cas->child, child) {
+        ypr_close_parent(ctx, &flag);
+        yprp_node(ctx, child);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "case", flag);
+}
+
+static void
+yprp_choice(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    int flag = 0;
+    struct lysp_node *child;
+    struct lysp_node_choice *choice = (struct lysp_node_choice *)node;
+
+    yprp_node_common1(ctx, node, &flag);
+
+    if (choice->dflt) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_DEFAULT, 0, choice->dflt, choice->exts);
+    }
+
+    yprp_node_common2(ctx, node, &flag);
+
+    LY_LIST_FOR(choice->child, child) {
+        ypr_close_parent(ctx, &flag);
+        yprp_node(ctx, child);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "choice", flag);
+}
+
+static void
+yprp_leaf(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    unsigned int u;
+    struct lysp_node_leaf *leaf = (struct lysp_node_leaf *)node;
+
+    int flag = 1;
+    yprp_node_common1(ctx, node, &flag);
+
+    yprp_type(ctx, &leaf->type);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_UNITS, 0, leaf->units, leaf->exts);
+    LY_ARRAY_FOR(leaf->musts, u) {
+        yprp_restr(ctx, &leaf->musts[u], "must", "condition", &flag);
+    }
+    ypr_substmt(ctx, LYEXT_SUBSTMT_DEFAULT, 0, leaf->dflt, leaf->exts);
+
+    yprp_node_common2(ctx, node, &flag);
+
+    LEVEL--;
+    ypr_close(ctx, "leaf", flag);
+}
+
+static void
+yprp_leaflist(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    unsigned int u;
+    struct lysp_node_leaflist *llist = (struct lysp_node_leaflist *)node;
+    int flag = 1;
+
+    yprp_node_common1(ctx, node, &flag);
+
+    yprp_type(ctx, &llist->type);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_UNITS, 0, llist->units, llist->exts);
+    LY_ARRAY_FOR(llist->musts, u) {
+        yprp_restr(ctx, &llist->musts[u], "must", "condition", NULL);
+    }
+    LY_ARRAY_FOR(llist->dflts, u) {
+        ypr_substmt(ctx, LYEXT_SUBSTMT_DEFAULT, u, llist->dflts[u], llist->exts);
+    }
+
+    ypr_config(ctx, node->flags, node->exts, NULL);
+
+    if (llist->flags & LYS_SET_MIN) {
+        ypr_unsigned(ctx, LYEXT_SUBSTMT_MIN, 0, llist->exts, llist->min);
+    }
+    if (llist->flags & LYS_SET_MAX) {
+        if (llist->max) {
+            ypr_unsigned(ctx, LYEXT_SUBSTMT_MAX, 0, llist->exts, llist->max);
+        } else {
+            ypr_substmt(ctx, LYEXT_SUBSTMT_MAX, 0, "unbounded", llist->exts);
+        }
+    }
+
+    if (llist->flags & LYS_ORDBY_MASK) {
+        ypr_substmt(ctx, LYEXT_SUBSTMT_ORDEREDBY, 0, (llist->flags & LYS_ORDBY_USER) ? "user" : "system", llist->exts);
+    }
+
+    ypr_status(ctx, node->flags, node->exts, &flag);
+    ypr_description(ctx, node->dsc, node->exts, &flag);
+    ypr_reference(ctx, node->ref, node->exts, &flag);
+
+    LEVEL--;
+    ypr_close(ctx, "leaf-list", flag);
+}
+
+static void
+yprp_list(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    unsigned int u;
+    int flag = 0;
+    struct lysp_node *child;
+    struct lysp_node_list *list = (struct lysp_node_list *)node;
+
+    yprp_node_common1(ctx, node, &flag);
+
+    LY_ARRAY_FOR(list->musts, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_restr(ctx, &list->musts[u], "must", "condition", &flag);
+    }
+    if (list->key) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_KEY, 0, list->key, list->exts);
+    }
+    LY_ARRAY_FOR(list->uniques, u) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_UNIQUE, u, list->uniques[u], list->exts);
+    }
+
+    ypr_config(ctx, node->flags, node->exts, NULL);
+
+    if (list->flags & LYS_SET_MIN) {
+        ypr_unsigned(ctx, LYEXT_SUBSTMT_MIN, 0, list->exts, list->min);
+    }
+    if (list->flags & LYS_SET_MAX) {
+        if (list->max) {
+            ypr_unsigned(ctx, LYEXT_SUBSTMT_MAX, 0, list->exts, list->max);
+        } else {
+            ypr_substmt(ctx, LYEXT_SUBSTMT_MAX, 0, "unbounded", list->exts);
+        }
+    }
+
+    if (list->flags & LYS_ORDBY_MASK) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_ORDEREDBY, 0, (list->flags & LYS_ORDBY_USER) ? "user" : "system", list->exts);
+    }
+
+    ypr_status(ctx, node->flags, node->exts, &flag);
+    ypr_description(ctx, node->dsc, node->exts, &flag);
+    ypr_reference(ctx, node->ref, node->exts, &flag);
+
+    LY_ARRAY_FOR(list->typedefs, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_typedef(ctx, &list->typedefs[u]);
+    }
+
+    LY_ARRAY_FOR(list->groupings, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_grouping(ctx, &list->groupings[u]);
+    }
+
+    LY_LIST_FOR(list->child, child) {
+        ypr_close_parent(ctx, &flag);
+        yprp_node(ctx, child);
+    }
+
+    LY_ARRAY_FOR(list->actions, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_action(ctx, &list->actions[u]);
+    }
+
+    LY_ARRAY_FOR(list->notifs, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_notification(ctx, &list->notifs[u]);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "list", flag);
+}
+
+static void
+yprp_refine(struct ypr_ctx *ctx, struct lysp_refine *refine)
+{
+    unsigned int u;
+    int flag = 0;
+
+    ypr_open(ctx, "refine", "target-node", refine->nodeid, flag);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, refine->exts, &flag, 0);
+    yprp_iffeatures(ctx, refine->iffeatures, refine->exts, &flag);
+
+    LY_ARRAY_FOR(refine->musts, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_restr(ctx, &refine->musts[u], "must", "condition", &flag);
+    }
+
+    if (refine->presence) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_PRESENCE, 0, refine->presence, refine->exts);
+    }
+
+    LY_ARRAY_FOR(refine->dflts, u) {
+        ypr_close_parent(ctx, &flag);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_DEFAULT, u, refine->dflts[u], refine->exts);
+    }
+
+    ypr_config(ctx, refine->flags, refine->exts, &flag);
+    ypr_mandatory(ctx, refine->flags, refine->exts, &flag);
+
+    if (refine->flags & LYS_SET_MIN) {
+        ypr_close_parent(ctx, &flag);
+        ypr_unsigned(ctx, LYEXT_SUBSTMT_MIN, 0, refine->exts, refine->min);
+    }
+    if (refine->flags & LYS_SET_MAX) {
+        ypr_close_parent(ctx, &flag);
+        if (refine->max) {
+            ypr_unsigned(ctx, LYEXT_SUBSTMT_MAX, 0, refine->exts, refine->max);
+        } else {
+            ypr_substmt(ctx, LYEXT_SUBSTMT_MAX, 0, "unbounded", refine->exts);
+        }
+    }
+
+    ypr_description(ctx, refine->dsc, refine->exts, &flag);
+    ypr_reference(ctx, refine->ref, refine->exts, &flag);
+
+    LEVEL--;
+    ypr_close(ctx, "refine", flag);
+}
+
+static void
+yprp_augment(struct ypr_ctx *ctx, const struct lysp_augment *aug)
+{
+    unsigned int u;
+    struct lysp_node *child;
+
+    ypr_open(ctx, "augment", "target-node", aug->nodeid, 1);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, aug->exts, NULL, 0);
+    yprp_when(ctx, aug->when, NULL);
+    yprp_iffeatures(ctx, aug->iffeatures, aug->exts, NULL);
+    ypr_status(ctx, aug->flags, aug->exts, NULL);
+    ypr_description(ctx, aug->dsc, aug->exts, NULL);
+    ypr_reference(ctx, aug->ref, aug->exts, NULL);
+
+    LY_LIST_FOR(aug->child, child) {
+        yprp_node(ctx, child);
+    }
+
+    LY_ARRAY_FOR(aug->actions, u) {
+        yprp_action(ctx, &aug->actions[u]);
+    }
+
+    LY_ARRAY_FOR(aug->notifs, u) {
+        yprp_notification(ctx, &aug->notifs[u]);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "augment", 1);
+}
+
+
+static void
+yprp_uses(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    unsigned int u;
+    int flag = 0;
+    struct lysp_node_uses *uses = (struct lysp_node_uses *)node;
+
+    yprp_node_common1(ctx, node, &flag);
+    yprp_node_common2(ctx, node, &flag);
+
+    LY_ARRAY_FOR(uses->refines, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_refine(ctx, &uses->refines[u]);
+    }
+
+    LY_ARRAY_FOR(uses->augments, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_augment(ctx, &uses->augments[u]);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "uses", flag);
+}
+
+static void
+yprp_anydata(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    unsigned int u;
+    int flag = 0;
+    struct lysp_node_anydata *any = (struct lysp_node_anydata *)node;
+
+    yprp_node_common1(ctx, node, &flag);
+
+    LY_ARRAY_FOR(any->musts, u) {
+        ypr_close_parent(ctx, &flag);
+        yprp_restr(ctx, &any->musts[u], "must", "condition", &flag);
+    }
+
+    yprp_node_common2(ctx, node, &flag);
+
+    LEVEL--;
+    ypr_close(ctx, lys_nodetype2str(node->nodetype), flag);
+}
+
+static void
+yprp_node(struct ypr_ctx *ctx, const struct lysp_node *node)
+{
+    LYOUT_CHECK(ctx->out);
+
+    switch (node->nodetype) {
+    case LYS_CONTAINER:
+        yprp_container(ctx, node);
+        break;
+    case LYS_CHOICE:
+        yprp_choice(ctx, node);
+        break;
+    case LYS_LEAF:
+        yprp_leaf(ctx, node);
+        break;
+    case LYS_LEAFLIST:
+        yprp_leaflist(ctx, node);
+        break;
+    case LYS_LIST:
+        yprp_list(ctx, node);
+        break;
+    case LYS_USES:
+        yprp_uses(ctx, node);
+        break;
+    case LYS_ANYXML:
+    case LYS_ANYDATA:
+        yprp_anydata(ctx, node);
+        break;
+    case LYS_CASE:
+        yprp_case(ctx, node);
+        break;
+    default:
+        break;
+    }
+}
+
+static void
+yprp_deviation(struct ypr_ctx *ctx, const struct lysp_deviation *deviation)
+{
+    unsigned int v;
+    struct lysp_deviate_add *add;
+    struct lysp_deviate_rpl *rpl;
+    struct lysp_deviate_del *del;
+    struct lysp_deviate *elem;
+
+    ypr_open(ctx, "deviation", "target-node", deviation->nodeid, 1);
+    LEVEL++;
+
+    yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, deviation->exts, NULL, 0);
+    ypr_description(ctx, deviation->dsc, deviation->exts, NULL);
+    ypr_reference(ctx, deviation->ref, deviation->exts, NULL);
+
+    LY_LIST_FOR(deviation->deviates, elem) {
+        ly_print(ctx->out, "%*s<deviate value=\"", INDENT);
+        if (elem->mod == LYS_DEV_NOT_SUPPORTED) {
+            if (elem->exts) {
+                ly_print(ctx->out, "not-supported\"/>\n");
+                LEVEL++;
+
+                yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, elem->exts, NULL, 0);
+            } else {
+                ly_print(ctx->out, "not-supported\"/>\n");
+                continue;
+            }
+        } else if (elem->mod == LYS_DEV_ADD) {
+            add = (struct lysp_deviate_add*)elem;
+            ly_print(ctx->out, "add\">\n");
+            LEVEL++;
+
+            yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, add->exts, NULL, 0);
+            ypr_substmt(ctx, LYEXT_SUBSTMT_UNITS, 0, add->units, add->exts);
+            LY_ARRAY_FOR(add->musts, v) {
+                yprp_restr(ctx, &add->musts[v], "must", "condition", NULL);
+            }
+            LY_ARRAY_FOR(add->uniques, v) {
+                ypr_substmt(ctx, LYEXT_SUBSTMT_UNIQUE, v, add->uniques[v], add->exts);
+            }
+            LY_ARRAY_FOR(add->dflts, v) {
+                ypr_substmt(ctx, LYEXT_SUBSTMT_DEFAULT, v, add->dflts[v], add->exts);
+            }
+            ypr_config(ctx, add->flags, add->exts, NULL);
+            ypr_mandatory(ctx, add->flags, add->exts, NULL);
+            if (add->flags & LYS_SET_MIN) {
+                ypr_unsigned(ctx, LYEXT_SUBSTMT_MIN, 0, add->exts, add->min);
+            }
+            if (add->flags & LYS_SET_MAX) {
+                if (add->max) {
+                    ypr_unsigned(ctx, LYEXT_SUBSTMT_MAX, 0, add->exts, add->max);
+                } else {
+                    ypr_substmt(ctx, LYEXT_SUBSTMT_MAX, 0, "unbounded", add->exts);
+                }
+            }
+        } else if (elem->mod == LYS_DEV_REPLACE) {
+            rpl = (struct lysp_deviate_rpl*)elem;
+            ly_print(ctx->out, "replace\">\n");
+            LEVEL++;
+
+            yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, rpl->exts, NULL, 0);
+            if (rpl->type) {
+                yprp_type(ctx, rpl->type);
+            }
+            ypr_substmt(ctx, LYEXT_SUBSTMT_UNITS, 0, rpl->units, rpl->exts);
+            ypr_substmt(ctx, LYEXT_SUBSTMT_DEFAULT, 0, rpl->dflt, rpl->exts);
+            ypr_config(ctx, rpl->flags, rpl->exts, NULL);
+            ypr_mandatory(ctx, rpl->flags, rpl->exts, NULL);
+            if (rpl->flags & LYS_SET_MIN) {
+                ypr_unsigned(ctx, LYEXT_SUBSTMT_MIN, 0, rpl->exts, rpl->min);
+            }
+            if (rpl->flags & LYS_SET_MAX) {
+                if (rpl->max) {
+                    ypr_unsigned(ctx, LYEXT_SUBSTMT_MAX, 0, rpl->exts, rpl->max);
+                } else {
+                    ypr_substmt(ctx, LYEXT_SUBSTMT_MAX, 0, "unbounded", rpl->exts);
+                }
+            }
+        } else if (elem->mod == LYS_DEV_DELETE) {
+            del = (struct lysp_deviate_del*)elem;
+            ly_print(ctx->out, "delete\">\n");
+            LEVEL++;
+
+            yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, del->exts, NULL, 0);
+            ypr_substmt(ctx, LYEXT_SUBSTMT_UNITS, 0, del->units, del->exts);
+            LY_ARRAY_FOR(del->musts, v) {
+                yprp_restr(ctx, &del->musts[v], "must", "condition", NULL);
+            }
+            LY_ARRAY_FOR(del->uniques, v) {
+                ypr_substmt(ctx, LYEXT_SUBSTMT_UNIQUE, v, del->uniques[v], del->exts);
+            }
+            LY_ARRAY_FOR(del->dflts, v) {
+                ypr_substmt(ctx, LYEXT_SUBSTMT_DEFAULT, v, del->dflts[v], del->exts);
+            }
+        }
+
+        LEVEL--;
+        ypr_close(ctx, "deviate", 1);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "deviation", 1);
+}
+
+/**
+ * @brief Minimal print of a schema.
+ *
+ * To print parsed schema when the parsed form was already removed
+ */
+static LY_ERR
+ypr_missing_format(struct ypr_ctx *ctx, const struct lys_module *module)
+{
+    /* module-header-stmts */
+    if (module->version) {
+        if (module->version) {
+            ypr_substmt(ctx, LYEXT_SUBSTMT_VERSION, 0, module->version == LYS_VERSION_1_1 ? "1.1" : "1", NULL);
+        }
+    }
+    ypr_substmt(ctx, LYEXT_SUBSTMT_NAMESPACE, 0, module->ns, NULL);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_PREFIX, 0, module->prefix, NULL);
+
+    /* meta-stmts */
+    if (module->org || module->contact || module->dsc || module->ref) {
+        ly_print(ctx->out, "\n");
+    }
+    ypr_substmt(ctx, LYEXT_SUBSTMT_ORGANIZATION, 0, module->org, NULL);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_CONTACT, 0, module->contact, NULL);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_DESCRIPTION, 0, module->dsc, NULL);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_REFERENCE, 0, module->ref, NULL);
+
+    /* revision-stmts */
+    if (module->revision) {
+        ypr_open(ctx, "revision", "date", module->revision, -1);
+    }
+
+    LEVEL--;
+    ypr_close(ctx, "module", 1);
+    ly_print_flush(ctx->out);
+
+    return LY_SUCCESS;
+}
+
+static void
+ypr_xmlns(struct ypr_ctx *ctx, const struct lys_module *module, unsigned int indent)
+{
+    unsigned int u;
+
+    ly_print(ctx->out, "%*sxmlns=\"%s\"", indent + INDENT, YIN_NS_URI);
+    ly_print(ctx->out, "\n%*sxmlns:%s=\"%s\"", indent + INDENT, module->prefix, module->ns);
+
+    struct lysp_module *modp = module->parsed;
+
+    LY_ARRAY_FOR(modp->imports, u){
+        ly_print(ctx->out, "\n%*sxmlns:%s=\"%s\"", indent + INDENT, modp->imports[u].prefix, modp->imports[u].module->ns);
+    }
+}
+
+struct ext_substmt_info_s stmt_attr_info[] = {
+    {NULL,               NULL,          0},             /**< LY_STMT_NONE*/
+    {"status",           "value",       SUBST_FLAG_ID}, /**< LY_STMT_STATUS */
+    {"config",           "value",       SUBST_FLAG_ID}, /**< LY_STMT_CONFIG */
+    {"mandatory",        "value",       SUBST_FLAG_ID}, /**< LY_STMT_MANDATORY */
+    {"units",            "name",        SUBST_FLAG_ID}, /**< LY_STMT_UNITS */
+    {"default",          "value",       SUBST_FLAG_ID}, /**< LY_STMT_DEFAULT */
+    {"type",             "name",        SUBST_FLAG_ID}, /**< LY_STMT_TYPE */
+    {"action",           "name",        SUBST_FLAG_ID}, /**< LY_STMT_ACTION */
+    {"anydata",          "name",        SUBST_FLAG_ID}, /**< LY_STMT_ANYDATA */
+    {"anyxml",           "name",        SUBST_FLAG_ID}, /**< LY_STMT_ANYXML */
+    {"argument",         "name",        SUBST_FLAG_ID}, /**< LY_STMT_ARGUMENT */
+    {"augment",          "target-node", SUBST_FLAG_ID}, /**< LY_STMT_AUGMENT */
+    {"base",             "name",        SUBST_FLAG_ID}, /**< LY_STMT_BASE */
+    {"belongs-to",       "module",      SUBST_FLAG_ID}, /**< LY_STMT_BELONGS_TO */
+    {"bit",              "name",        SUBST_FLAG_ID}, /**< LY_STMT_BIT */
+    {"case",             "name",        SUBST_FLAG_ID}, /**< LY_STMT_CASE */
+    {"choice",           "name",        SUBST_FLAG_ID}, /**< LY_STMT_CHOICE */
+    {"contact",          "text",        SUBST_FLAG_YIN},/**< LY_STMT_CONTACT */
+    {"container",        "name",        SUBST_FLAG_ID}, /**< LY_STMT_CONTAINER */
+    {"description",      "text",        SUBST_FLAG_YIN},/**< LY_STMT_DESCRIPTION */
+    {"deviate",          "value",       SUBST_FLAG_ID}, /**< LY_STMT_DEVIATE */
+    {"deviation",        "target-node", SUBST_FLAG_ID}, /**< LY_STMT_DEVIATION */
+    {"enum",             "name",        SUBST_FLAG_ID}, /**< LY_STMT_ENUM */
+    {"error-app-tag",    "value",       SUBST_FLAG_ID}, /**< LY_STMT_ERROR_APP_TAG */
+    {"error-message",    "value",       SUBST_FLAG_YIN},/**< LY_STMT_ERROR_MESSAGE */
+    {"extension",        "name",        SUBST_FLAG_ID}, /**< LY_STMT_EXTENSION */
+    {"feature",          "name",        SUBST_FLAG_ID}, /**< LY_STMT_FEATURE */
+    {"fraction-digits",  "value",       SUBST_FLAG_ID}, /**< LY_STMT_FRACTION_DIGITS */
+    {"grouping",         "name",        SUBST_FLAG_ID}, /**< LY_STMT_GROUPING */
+    {"identity",         "name",        SUBST_FLAG_ID}, /**< LY_STMT_IDENTITY */
+    {"if-feature",       "name",        SUBST_FLAG_ID}, /**< LY_STMT_IF_FEATURE */
+    {"import",           "module",      SUBST_FLAG_ID}, /**< LY_STMT_IMPORT */
+    {"include",          "module",      SUBST_FLAG_ID}, /**< LY_STMT_INCLUDE */
+    {"input",            NULL,          0},             /**< LY_STMT_INPUT */
+    {"key",              "value",       SUBST_FLAG_ID}, /**< LY_STMT_KEY */
+    {"leaf",             "name",        SUBST_FLAG_ID}, /**< LY_STMT_LEAF */
+    {"leaf-list",        "name",        SUBST_FLAG_ID}, /**< LY_STMT_LEAF_LIST */
+    {"length",           "value",       SUBST_FLAG_ID}, /**< LY_STMT_LENGTH */
+    {"list",             "name",        SUBST_FLAG_ID}, /**< LY_STMT_LIST */
+    {"max-elements",     "value",       SUBST_FLAG_ID}, /**< LY_STMT_MAX_ELEMENTS */
+    {"min-elements",     "value",       SUBST_FLAG_ID}, /**< LY_STMT_MIN_ELEMENTS */
+    {"modifier",         "value",       SUBST_FLAG_ID}, /**< LY_STMT_MODIFIER */
+    {"module",           "name",        SUBST_FLAG_ID}, /**< LY_STMT_MODULE */
+    {"must",             "condition",   SUBST_FLAG_ID}, /**< LY_STMT_MUST */
+    {"namespace",        "uri",         SUBST_FLAG_ID}, /**< LY_STMT_NAMESPACE */
+    {"notification",     "name",        SUBST_FLAG_ID}, /**< LY_STMT_NOTIFICATION */
+    {"ordered-by",       "value",       SUBST_FLAG_ID}, /**< LY_STMT_ORDERED_BY */
+    {"organization",     "text",        SUBST_FLAG_YIN},/**< LY_STMT_ORGANIZATION */
+    {"output",           NULL,          0},             /**< LY_STMT_OUTPUT */
+    {"path",             "value",       SUBST_FLAG_ID}, /**< LY_STMT_PATH */
+    {"pattern",          "value",       SUBST_FLAG_ID}, /**< LY_STMT_PATTERN */
+    {"position",         "value",       SUBST_FLAG_ID}, /**< LY_STMT_POSITION */
+    {"prefix",           "value",       SUBST_FLAG_ID}, /**< LY_STMT_PREFIX */
+    {"presence",         "value",       SUBST_FLAG_ID}, /**< LY_STMT_PRESENCE */
+    {"range",            "value",       SUBST_FLAG_ID}, /**< LY_STMT_RANGE */
+    {"reference",        "text",        SUBST_FLAG_YIN},/**< LY_STMT_REFERENCE */
+    {"refine",           "target-node", SUBST_FLAG_ID}, /**< LY_STMT_REFINE */
+    {"require-instance", "value",       SUBST_FLAG_ID}, /**< LY_STMT_REQUIRE_INSTANCE */
+    {"revision",         "date",        SUBST_FLAG_ID}, /**< LY_STMT_REVISION */
+    {"revision-date",    "date",        SUBST_FLAG_ID}, /**< LY_STMT_REVISION_DATE */
+    {"rpc",              "name",        SUBST_FLAG_ID}, /**< LY_STMT_RPC */
+    {"submodule",        "name",        SUBST_FLAG_ID}, /**< LY_STMT_SUBMODULE */
+    {"typedef",          "name",        SUBST_FLAG_ID}, /**< LY_STMT_TYPEDEF */
+    {"unique",           "tag",         SUBST_FLAG_ID}, /**< LY_STMT_UNIQUE */
+    {"uses",             "name",        SUBST_FLAG_ID}, /**< LY_STMT_USES */
+    {"value",            "value",       SUBST_FLAG_ID}, /**< LY_STMT_VALUE */
+    {"when",             "condition",   SUBST_FLAG_ID}, /**< LY_STMT_WHEN */
+    {"yang-version",     "value",       SUBST_FLAG_ID}, /**< LY_STMT_YANG_VERSION */
+    {"yin-element",      "value",       SUBST_FLAG_ID}, /**< LY_STMT_YIN_ELEMENT */
+    {NULL,               NULL,          0},             /**< LY_STMT_EXTENSION_INSTANCE */
+    {NULL,               NULL,          0},             /**< LY_STMT_SYNTAX_SEMICOLON */
+    {NULL,               NULL,          0},             /**< LY_STMT_SYNTAX_LEFT_BRACE */
+    {NULL,               NULL,          0},             /**< LY_STMT_SYNTAX_RIGHT_BRACE */
+    {NULL,               NULL,          0},             /**< LY_STMT_ARG_TEXT */
+    {NULL,               NULL,          0},             /**< LY_STMT_ARG_VALUE */
+};
+
+static void
+yprp_stmt(struct ypr_ctx *ctx, struct lysp_stmt *stmt)
+{
+    struct lysp_stmt *childstmt;
+    int flag = stmt->child ? 1 : -1;
+
+    /* TODO:
+             the extension instance substatements in extension instances (LY_STMT_EXTENSION_INSTANCE)
+             cannot find the compiled information, so it is needed to be done,
+             currently it is ignored */
+    if(stmt_attr_info[stmt->kw].name) {
+        if(stmt_attr_info[stmt->kw].flags & SUBST_FLAG_YIN) {
+            ypr_open(ctx, stmt->stmt, NULL, NULL, flag);
+            ypr_yin_arg(ctx, stmt_attr_info[stmt->kw].arg, stmt->arg);
+        }
+        else {
+            ypr_open(ctx, stmt->stmt, stmt_attr_info[stmt->kw].arg, stmt->arg, flag);
+        }
+    }
+
+    if (stmt->child) {
+        LEVEL++;
+        LY_LIST_FOR(stmt->child, childstmt) {
+            yprp_stmt(ctx, childstmt);
+        }
+        LEVEL--;
+        ypr_close(ctx, stmt->stmt, flag);
+    }
+}
+
+/**
+ * @param[in] count Number of extensions to print, 0 to print them all.
+ */
+static void
+yprp_extension_instances(struct ypr_ctx *ctx, LYEXT_SUBSTMT substmt, uint8_t substmt_index,
+                               struct lysp_ext_instance *ext, int *flag, unsigned int count)
+{
+    unsigned int u;
+    char *str;
+    struct lysp_stmt *stmt;
+    const char *argument;
+    const char *ext_argument;
+
+    if (!count && ext) {
+        count = LY_ARRAY_SIZE(ext);
+    }
+    LY_ARRAY_FOR(ext, u) {
+        if (!count) {
+            break;
+        }
+
+        count--;
+        if (ext->insubstmt != substmt || ext->insubstmt_index != substmt_index) {
+            continue;
+        }
+
+        if (!ext->compiled && ext->yin) {
+            ly_print(ctx->out, "%*s<%s/> <!-- Model comes from different input format, extensions must be resolved first. -->\n", INDENT, ext[u].name);
+            continue;
+        }
+
+        ypr_close_parent(ctx, flag);
+        int inner_flag = 0;
+        argument = NULL;
+        ext_argument = NULL;
+
+        if (ext[u].compiled) {
+            argument = ext[u].compiled->argument;
+            ext_argument = ext[u].compiled->def->argument;
+        } else {
+            argument = ext[u].argument;
+        }
+
+        if (ext->yin) {
+            ypr_open(ctx, ext[u].name, NULL, NULL, 1);
+            if (asprintf(&str, "%s:%s", ext[u].compiled->def->module->prefix, ext_argument) == -1) {
+                LOGMEM(ctx->module->ctx);
+                ctx->out->status = LY_EMEM;
+                return;
+            }
+            LEVEL++;
+            inner_flag = 1;
+            ypr_yin_arg(ctx, str, argument);
+            free(str);
+            str = NULL;
+            LEVEL--;
+        } else {
+            ypr_open(ctx, ext[u].name, ext_argument, argument, inner_flag);
+        }
+
+        LEVEL++;
+        LY_LIST_FOR(ext[u].child, stmt) {
+            ypr_close_parent(ctx, &inner_flag);
+            yprp_stmt(ctx, stmt);
+        }
+        LEVEL--;
+        ypr_close(ctx, ext[u].name, inner_flag);
+    }
+}
+
+LY_ERR
+yin_print_parsed(struct lyout *out, const struct lys_module *module)
+{
+    unsigned int u;
+    struct lysp_node *data;
+    struct lysp_module *modp = module->parsed;
+    struct ypr_ctx ctx_ = {.out = out, .level = 0, .module = module}, *ctx = &ctx_;
+
+    ly_print(ctx->out, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
+    ly_print(ctx->out, "%*s<module name=\"%s\"\n", INDENT, module->name);
+    ypr_xmlns(ctx, module, 8);
+    ly_print(ctx->out, ">\n");
+
+    LEVEL++;
+
+    if (!modp) {
+        ly_print(ctx->out, "%*s<!-- PARSED INFORMATION ARE NOT FULLY PRESENT -->\n", INDENT);
+        return ypr_missing_format(ctx, module);
+    }
+
+    /* module-header-stmts */
+    if (module->version) {
+        if (module->version) {
+            ypr_substmt(ctx, LYEXT_SUBSTMT_VERSION, 0, module->version == LYS_VERSION_1_1 ? "1.1" : "1", modp->exts);
+        }
+    }
+    ypr_substmt(ctx, LYEXT_SUBSTMT_NAMESPACE, 0, module->ns, modp->exts);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_PREFIX, 0, module->prefix, modp->exts);
+
+    /* linkage-stmts */
+    LY_ARRAY_FOR(modp->imports, u) {
+        ypr_open(ctx, "import", "module", modp->imports[u].module->name, 1);
+        LEVEL++;
+        yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, modp->imports[u].exts, NULL, 0);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_PREFIX, 0, modp->imports[u].prefix, modp->imports[u].exts);
+        if (modp->imports[u].rev[0]) {
+            ypr_substmt(ctx, LYEXT_SUBSTMT_REVISIONDATE, 0, modp->imports[u].rev, modp->imports[u].exts);
+        }
+        ypr_substmt(ctx, LYEXT_SUBSTMT_DESCRIPTION, 0, modp->imports[u].dsc, modp->imports[u].exts);
+        ypr_substmt(ctx, LYEXT_SUBSTMT_REFERENCE, 0, modp->imports[u].ref, modp->imports[u].exts);
+        LEVEL--;
+        ypr_close(ctx, "import", 1);
+    }
+    LY_ARRAY_FOR(modp->includes, u) {
+        if (modp->includes[u].rev[0] || modp->includes[u].dsc || modp->includes[u].ref || modp->includes[u].exts) {
+            ypr_open(ctx, "include", "module", modp->includes[u].submodule->name, 1);
+            LEVEL++;
+            yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, modp->includes[u].exts, NULL, 0);
+            if (modp->includes[u].rev[0]) {
+                ypr_substmt(ctx, LYEXT_SUBSTMT_REVISIONDATE, 0, modp->includes[u].rev, modp->includes[u].exts);
+            }
+            ypr_substmt(ctx, LYEXT_SUBSTMT_DESCRIPTION, 0, modp->includes[u].dsc, modp->includes[u].exts);
+            ypr_substmt(ctx, LYEXT_SUBSTMT_REFERENCE, 0, modp->includes[u].ref, modp->includes[u].exts);
+            LEVEL--;
+            ly_print(out, "%*s}\n", INDENT);
+        } else {
+            ypr_open(ctx, "include", "module", modp->includes[u].submodule->name, -1);
+        }
+    }
+
+    /* meta-stmts */
+    if (module->org || module->contact || module->dsc || module->ref) {
+        ly_print(out, "\n");
+    }
+    ypr_substmt(ctx, LYEXT_SUBSTMT_ORGANIZATION, 0, module->org, modp->exts);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_CONTACT, 0, module->contact, modp->exts);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_DESCRIPTION, 0, module->dsc, modp->exts);
+    ypr_substmt(ctx, LYEXT_SUBSTMT_REFERENCE, 0, module->ref, modp->exts);
+
+    /* revision-stmts */
+    if (modp->revs) {
+        ly_print(out, "\n");
+    }
+    LY_ARRAY_FOR(modp->revs, u) {
+        yprp_revision(ctx, &modp->revs[u]);
+    }
+    /* body-stmts */
+    LY_ARRAY_FOR(modp->extensions, u) {
+        ly_print(out, "\n");
+        yprp_extension(ctx, &modp->extensions[u]);
+    }
+    if (modp->exts) {
+        ly_print(out, "\n");
+        yprp_extension_instances(ctx, LYEXT_SUBSTMT_SELF, 0, module->parsed->exts, NULL, 0);
+    }
+
+    LY_ARRAY_FOR(modp->features, u) {
+        yprp_feature(ctx, &modp->features[u]);
+    }
+
+    LY_ARRAY_FOR(modp->identities, u) {
+        yprp_identity(ctx, &modp->identities[u]);
+    }
+
+    LY_ARRAY_FOR(modp->typedefs, u) {
+        yprp_typedef(ctx, &modp->typedefs[u]);
+    }
+
+    LY_ARRAY_FOR(modp->groupings, u) {
+        yprp_grouping(ctx, &modp->groupings[u]);
+    }
+
+    LY_LIST_FOR(modp->data, data) {
+        yprp_node(ctx, data);
+    }
+
+    LY_ARRAY_FOR(modp->augments, u) {
+        yprp_augment(ctx, &modp->augments[u]);
+    }
+
+    LY_ARRAY_FOR(modp->rpcs, u) {
+        yprp_action(ctx, &modp->rpcs[u]);
+    }
+
+    LY_ARRAY_FOR(modp->notifs, u) {
+        yprp_notification(ctx, &modp->notifs[u]);
+    }
+
+    LY_ARRAY_FOR(modp->deviations, u) {
+        yprp_deviation(ctx, &modp->deviations[u]);
+    }
+
+    LEVEL--;
+    ly_print(out, "%*s</module>\n", INDENT);
+    ly_print_flush(out);
+
+    return LY_SUCCESS;
+}
+
diff --git a/src/tree_schema.h b/src/tree_schema.h
index b7a8c5d..bb432e1 100644
--- a/src/tree_schema.h
+++ b/src/tree_schema.h
@@ -130,8 +130,8 @@
 typedef enum {
     LYS_OUT_UNKNOWN = 0, /**< unknown format, used as return value in case of error */
     LYS_OUT_YANG = 1,    /**< YANG schema output format */
-    LYS_OUT_YIN = 3,     /**< YIN schema output format */
     LYS_OUT_YANG_COMPILED = 2, /**< YANG schema output format of the compiled schema tree */
+    LYS_OUT_YIN = 3,     /**< YIN schema output format */
 
     LYS_OUT_TREE,        /**< Tree schema output format, for more information see the [printers](@ref howtoschemasprinters) page */
     LYS_OUT_INFO,        /**< Info schema output format, for more information see the [printers](@ref howtoschemasprinters) page */
diff --git a/src/tree_schema_internal.h b/src/tree_schema_internal.h
index 59e7d29..abec951 100644
--- a/src/tree_schema_internal.h
+++ b/src/tree_schema_internal.h
@@ -22,6 +22,8 @@
 #include "tree_schema.h"
 #include "xml.h"
 
+#define YIN_NS_URI "urn:ietf:params:xml:ns:yang:yin:1"
+
 #define LOGVAL_PARSER(CTX, ...) LOGVAL((CTX)->ctx, (CTX)->pos_type, (CTX)->pos_type == LY_VLOG_LINE ? &(CTX)->line : (void*)(CTX)->path, __VA_ARGS__)
 
 /**