$WBSRQ is available for use with all WBSP commands:
reportfilename - full path and file name of the sub report file
whereclause - the condition(s) that records must satisfy to be included in the report.
Source code of the processed report. If source code contains <body> and </body> tags, function will include only the source code between these tags.
To learn more about sub reports, please read "WhizBase sub reports" page.