data tree DOC lyd_merge examples
diff --git a/src/tree_data.h b/src/tree_data.h
index 9b74f5c..2f48838 100644
--- a/src/tree_data.h
+++ b/src/tree_data.h
@@ -1407,6 +1407,16 @@
* @brief Merge the source data subtree into the target data tree. Merge may not be complete until validation
* is called on the resulting data tree (data from more cases may be present, default and non-default values).
*
+ * Example input:
+ *
+ * source (A1) - A2 - A3 target (B1) - B2 - B3
+ * /\ /\ /\ /\ /\ /\
+ * .... .... .... .... .... ....
+ *
+ * result target (A1) - B1 - B2 - B3
+ * /\ /\ /\ /\
+ * .... .... .... ....
+ *
* @param[in,out] target Target data tree to merge into, must be a top-level tree.
* @param[in] source Source data tree to merge, must be a top-level tree.
* @param[in] options Bitmask of option flags, see @ref mergeoptions.
@@ -1420,6 +1430,16 @@
* complete until validation called on the resulting data tree (data from more cases may be present, default
* and non-default values).
*
+ * Example input:
+ *
+ * source (A1) - A2 - A3 target (B1) - B2 - B3
+ * /\ /\ /\ /\ /\ /\
+ * .... .... .... .... .... ....
+ *
+ * result target (A1) - A2 - A3 - B1 - B2 - B3
+ * /\ /\ /\ /\ /\ /\
+ * .... .... .... .... .... ....
+ *
* @param[in,out] target Target data tree to merge into, must be a top-level tree.
* @param[in] source Source data tree to merge, must be a top-level tree.
* @param[in] options Bitmask of option flags, see @ref mergeoptions.