You can customize the dummy panel, EDGP@LCL, to add facilities to the ISPF dialog. The 'U' line command allows you locally-provided line command support and calls the EDGRLCL exec. A set of variables are saved in the variable pool for use by the EDGRLCL exec. You can use this exec to implement any local extensions to the search results line commands. If the exec does not exist, for example, the installation has not provided one, one of these error messages is displayed: U line command not in use or You must use the EDGRLCL exec to implement the U line command.

The set of variables saved for use by the EDGRLCL exec depends on the search results list being processed. Each of the fields in the current row of the table are available as well as the table name, an indication of what type of search the results are for, the current row, and other table settings that might be required by the exec. The exec does not need to process all rows of the table, only the current row. It is called for each row of the table for which the 'U' line command has been specified.