A menu constructor utility by RAA. dataForMenu is a list of items which mean:
nil Indicates to add a line
first element is symbol Add updating item with the symbol as the wording selector
second element is a list second element has the receiver and selector
first element is a string Add menu item with the string as its wording
second element is a list second element has the receiver and selector
a third element exists Use it as the balloon text
a fourth element exists Use it as the enablement selector (updating case only)
The user requested 'new morph' from the world menu. Put up a menu that allows many ways of obtaining new morphs. If the preference #classicNewMorphMenu is true, the full form of yore is used; otherwise, a much shortened form is used.