This command controls the display of the window captions. Normally a caption is only used if more than one window is shown on the display (split screen mode). But if the type is set to
screen shows a caption
even if only one window is displayed. The default
The second form changes the text used for the caption. You can use
all string escapes (see String Escapes).
a default of ‘%3n %t’.
You can mix both forms by providing the string as an additional argument.