diff --git a/doc/liggghtsCommandModel_readLiggghtsData.txt b/doc/liggghtsCommandModel_readLiggghtsData.txt
index f7491aab..e2fc588d 100644
--- a/doc/liggghtsCommandModel_readLiggghtsData.txt
+++ b/doc/liggghtsCommandModel_readLiggghtsData.txt
@@ -35,7 +35,8 @@ readLiggghtsDataProps0
 
 [Description:]
 
-The readLiggghtsData liggghtsCommand Model can be used to ???
+The {readLiggghtsData} liggghtsCommandModel can be used to read LIGGGHTS data
+files into LIGGGHTS during runtime of a coupled simulation.
 
 IMPORTANT NOTE: Model is outdated.
 
diff --git a/doc/locateModel_engineSearchMany2Many.txt b/doc/locateModel_engineSearchMany2Many.txt
index b05110c4..a39aba99 100644
--- a/doc/locateModel_engineSearchMany2Many.txt
+++ b/doc/locateModel_engineSearchMany2Many.txt
@@ -39,6 +39,11 @@ engineSearchMany2ManyProps
 
 The locateModel "engine" locates the CFD cell and cellID corresponding to a
 given position.
+This model is a dummy for the
+"twoWayMany2Many dataExchangeModel"_dataExchangeModel_twoWayMany2Many.html which
+locates using the specified "engine" during coupling.
+
+NOTE: Using this model with any other dataExchangeModel will cause problems.
 
 The {engineSearchMany2Many} locateModel can be used with different settings to
 use different algorithms: