Menu Start
Starts menu screens presentation.
Return
Supported number of visible options, depending on the size of the title and the display's characteristics (if = 0, it's not possible to assmeble the menu).
Parameters
s Title
(IN) - Menu's title, may have one or more lines separated by '\r'.
l Flags
(OUT) - Returns if the menu accepts hotkey; in case it does, returns the flag "DSP_F_HOTKEY", otherwise the field returns blank.