get-clipboard-string in clipboard<%>
Gets the current clipboard contents as simple text, returning
#f if the clipboard does not contain any text.
See
get-clipboard-data for information on eventspaces and the current clipboard client.
( -> string or send a-clipboard get-clipboard-string time)#f
time : exact integer
See Cut and Paste for a discussion of the time argument. If
time is outside the platform-specific range of times,
an exn:application:mismatch exception is raised.