tree printer FEATURE basic implementation of YANG tree format printer
Follows RFC 8340.
Fixes #858
diff --git a/src/printer_schema.h b/src/printer_schema.h
index 52b4fbd..a204f8a 100644
--- a/src/printer_schema.h
+++ b/src/printer_schema.h
@@ -95,7 +95,7 @@
#define LYS_PRINT_SHRINK LY_PRINT_SHRINK /**< Flag for output without indentation and formatting new lines. */
#define LYS_PRINT_NO_SUBSTMT 0x10 /**< Print only top-level/referede node information,
do not print information from the substatements */
-// #define LYS_PRINT_TREE_RFC 0x01 /**< Conform to the RFC TODO tree output (only for tree format) */
+// #define LYS_PRINT_TREE_RFC 0x01 /**< Conform to the RFC8340 tree output (only for tree format) */
// #define LYS_PRINT_TREE_GROUPING 0x02 /**< Print groupings separately (only for tree format) */
// #define LYS_PRINT_TREE_USES 0x04 /**< Print only uses instead the resolved grouping nodes (only for tree format) */
// #define LYS_PRINT_TREE_NO_LEAFREF 0x08 /**< Do not print the target of leafrefs (only for tree format) */