ENH: createBafflesDict: more comment

applications/utilities/mesh/manipulation/createBaffles/createBafflesDict

@@ -19,13 +19,18 @@ FoamFile
 // - or converting boundary faces into a boundary face
 //   (internalFacesOnly=false)(though should use really createPatch
 //    to do this)
-// - can also create duplicate (overlapping) sets of baffles:
-//      - internalFacesOnly = false
-//      - have 4 entries in patches:
-//          - master
-//          - slave
-//          - additional master
-//          - additional slave
+// - specification in one of two modes:
+//      - patchPairs : create two patches of same type, same input
+//      - patches    : create patches separately, full control over what
+//                     to create on what side
+//                     (this mode can also create duplicate (overlapping)
+//                      sets of baffles:
+//                      - internalFacesOnly = false
+//                      - have 4 entries in patches:
+//                          - master
+//                          - slave
+//                          - additional master
+//                          - additional slave)
 
 
 // Whether to convert internal faces only (so leave boundary faces intact).