Shift + Double Click should maximize/restore menu size
The Morrowind PC Manual says that in addition to "hiding" (closing) a menu when you double click its title (a feature already implemented) when you hold shift + double click the menu's title it should alternate between maximizing the menu on the screen and returning it to the size it was originally.
#1 Updated by Andrei Kortunov about 1 month ago
Note: looks like vanilla Morrowind stores size for both maximized and normal windows, and three flags which looks like isMaximized, isHidden and isPinned.
How it looks:
MenuDialog=1.7 0.9766 0.8750 0.8148 0.2500 0.4957 0.3750 0.5542 0.9019 1 0 1
We are already store isPinned flag, so we can also store isMaximised, and maximized window size.