truncate rename tokens

Hi
is it possible to do a truncate of rename tokens to a given number of letters or digits ?
All I can find is the "replace text ..." feature with search and replace of predefined sequences.
Thanks
Graf Wetter
is it possible to do a truncate of rename tokens to a given number of letters or digits ?
All I can find is the "replace text ..." feature with search and replace of predefined sequences.
Thanks
Graf Wetter