If ROW-RESIZABLE is TRUE, the AVM sensitizes the browse to the START-ROW-RESIZE and END-ROW-RESIZE events, which lets the user change the row height at any row juncture.
Alternately, if you add the ResizeinCell option to the [Startup] section of the progress.ini file and set it to NO, you limit the user's ability to change the row height to only at the row marker separator. If a row does not have a row marker, the user cannot change the height of that row.
If the ResizeinCell option is set to YES, you get the default behavior where the user can change the row height at any row juncture.