Usually there is no reason to disable 4GL mode for a page. If you do so, you should be aware of the impact of this change.
If you turn off 4GL mode on the Page page in the Page Properties dialog box, the page cannot use any of the processing done by the 4GL JSP pages. In this case, the events do not produce any action because the server objects representing the controls are not available.
Server event scripts that you created remain in the source file. If you want to remove those scripts, you must edit the source file and delete them. You must also edit the source to place FORM tags around existing fields or controls whose values you want to submit to a different page.
