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--- 01_user_documentation:07_rgg_xl:03_query_graph:07_msgraph:03_predicate [2026/02/07 12:47] – gaetan
+++ 01_user_documentation:07_rgg_xl:03_query_graph:07_msgraph:03_predicate [2026/02/07 13:04] (current) – gaetan
@@ Line 2: / Line 2: @@
 The MSGraph have a specific predicate for the [[:01_user_documentation:07_rgg_xl:02_xl:03_query:01_predicate:02_path|path patterns]]. It will try to implicitly match path pattern between the different scales of the other predicates.
+===== Scale matching =====
+For the MSGraph, the spacing predicate (implicit path pattern) have two implicit usages:
+  - The matched nodes between the predicate belong to the same scale: the spacing pattern works as in a [[:01_user_documentation:07_rgg_xl:03_query_graph:03_rgggraph|rgg graph model]] (i.e. as defined in [[:01_user_documentation:07_rgg_xl:02_xl:03_query:01_predicate:02_path:01_implicit|implicit path pattern]]).
+  - Otherwise, the predicate use [[:01_user_documentation:06_graph:01_edge:04_refinement|refinement edges]] as default connection. (Even with the implicit "branch" edge '[').
+To define if nodes type belong to the same scale, the  [[:01_user_documentation:06_graph:03_graphs:01_project_graph:03_type_graph|type graph]] is used.
 ===== Examples =====
@@ Line 11: / Line 19: @@
 MSGraph msgraph = MSGraph.get (graph()) ; // get an instance of a MSGraph
 // use the MSGraph as query model
-msgraph.[A b:B ::> println(b);]; // the node B is found because Node "SPACE" Node look for refinement edges as well
+msgraph.[A b:B ::> println(b);]; // the node B is found because Node "SPACE" Node look for refinement edges as A and B are not defined in the same scale
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