Does a option pane support items with a tabulator?

Is it possible to put a string containig a tab as an item in an option pane?
If so, is the tabulator value settable?

Taken from the examples:

(capi:define-interface option-pane-test ()
  () 
  (:panes
   (color-chooser
    capi:option-pane
    :accessor color-chooser
    :title "Color:"
    :items (list (concatenate 'string "red" #\Tab "Great Red") :green :blue
:white :black)
    :print-function 'string-capitalize
    :selection-callback 'option-pane-set-color)
   (color-square
    capi:output-pane
    :accessor color-square))
  (:layouts
   (default-layout
    capi:column-layout
    '(color-chooser color-square)))
  (:default-initargs
   :title "Option Pane Test"
   :best-height 200))


Regards
Hans-Peter