update docs

docs/graph_ops/link.md

@@ -17,6 +17,10 @@ The 1-based index selecting the value providing node in the AQL source query.
 
 Contains one or multiple 1-based indexes, from which (in order of mentioning) the value for mapping source and target will be concatenated.
 
+###  source_to_edge
+
+This 1-based index list can be used to copy the given annotations from the source query to the edge that is to be created.
+
 ###  target_query
 
 The AQL query to find all target node annotations.
@@ -29,6 +33,10 @@ The 1-based index selecting the value providing node in the AQL target query.
 
 Contains one or multiple 1-based indexes, from which (in order of mentioning) the value for mapping source and target will be concatenated.
 
+###  target_to_edge
+
+This 1-based index list can be used to copy the given annotations from the target query to the edge that is to be created.
+
 ###  component
 
 The edge component to be built.

docs/graph_ops/map.md

@@ -100,3 +100,18 @@ finish!
 
 The path of the TOML file containing an array of mapping rules.
 
+###  debug
+
+If you wish for detailled output about the match count of each rule,
+set this to `true`. Default is `false`, so no output.
+
+Example:
+```toml
+[[graph_op]]
+action = "map"
+
+[graph_op.config]
+rule_file = "mapping-rules.toml"
+debug = true
+```
+