LOGO-L> one small problem

[Harrie Hoenjet <H.Hoenjet@inter.NL.net>]

Hi folks,

I want to remove from a word the first and last letter every time I call a
recursive function.
So ... MSWLOGO
        SWLOG
         WLO
          L

I write the following procedure

to remove :wrd
if emptyp :wrd [stop]
print :wrd
remove bf bl :wrd
end

When the procedure gets to the last letter (L), I get a error message
" .... Logo doesn't like [] as an input for bf .... ".
I understand the error. But how do I fix it?

Regards,
Harrie
H.Hoenjet@inter.NL.net

---------------------------------------------------------------
Please post messages to the Logo forum to logo-l@gsn.org.  Mail
questions about the list administration to logofdn@gsn.org.  To
unsubscribe send    unsubscribe logo-l    to majordomo@gsn.org.