Info menu

The info "menu" in Doom.

The info menu, also called Read this! menu in shareware Doom, displays help screens generally followed in shareware or demo versions of the IWADs by order information to buy the registered game. Its MENUDEF name is ReadThisMenu and it can be summoned with the menu_help console command (bound to the "F1" key by default).

The content of the info menu is not defined in MENUDEF directly; instead it is built from the GameInfo definition with the infopage property, and, in game, from the f1 property from the current map definition, if any.