* \li Syntax: ui-toggle <statusbar|menubar|frame|fullscreen>
* \li Params: statusbar : Toggle visibility of the statusbar.\n
menubar : Toggle visibility of the menubar.\n
+ scrollbar : Toggle visibility of the scrollbar.\n
frame : Toggle visibility of the frames around editing window.\n
fullscreen : Toggle fullscreen mode. This also covers calling the
previous functions. However #LFUN_TOOLBAR_TOGGLE for the