When you install a user exit, the user exit intercepts the LE Command (LE_CMD) structure and changes its content. The LE Command structure defines the transaction operations that you want to send to Replication Server.
The LE Command structure points to the @RPTCOL structure; the @RPTCOL structure then points to the COL structure.
The LECMDEXT member of the hlq.MACLIB data set contains sample LE Command, @RPTCOL, and COL structures.
The following sections show the contents of these structures.
