The Cross-Reference Query Results window lets you view the results of
  a cross-reference query.  Initially, SCA shows the name of the
  symbol, its type, and domain in the left-hand pane.

  Double click on the icon in the left-hand pane to show all
  occurrences of the symbol in the right hand pane.  Drag the sash to
  the left or use the scroll bars to view the occurrence information.
  SCA shows how its used, the module it is contained in, the file in
  which it resides, and the line in the code where it can be found.
  Position the pointer on an occurrence and double click on MB1 to go
  to its location in the source code.