None.
caption always|splitonly [string]
caption string [string]
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 “always”, screen
shows
a caption even if only one window is displayed. The default is
“splitonly”.
The second form changes the text used for the caption. You can use all
escapes from the String Escapes chapter. screen
uses a
default of “%3n %t
”.
You can mix both forms by providing a string as an additional argument.
* caption splitonly “%{= kc}%H–%n (%t)%-5=%{= .m}%0c”