Cmenu
cmenu <value>
The cmenu CON command opens a specific menu screen as identified by the value. For more details see current_menu.
If you want to override the hardcoded menu progression, it is recommended to use EVENT_CHANGEMENU, although this command also works well in EVENT_DISPLAYMENU for the majority of cases.
Remember that working around, hiding, or skipping the EDuke32 port credits (current_menu values 993 and 994) is a violation of the EDuke32 license.