mode-line-client

mode-line-client is a variable defined in `bindings.el'.
Its value is shown below.

• This variable may be risky if used as a file-local variable.

Documentation:
Mode line construct for identifying emacsclient frames.

Value:

(""
 (:propertize
  (""
   (:eval
    (if
	(frame-parameter nil 'client)
	"@" "")))
  help-echo "emacsclient frame"))