Very Computer

I'm using a DEC 3000 running OSF/1 v3.0  

Is there a way to echo special control characters in order to change the title
of my DECterm window?  How about the icon name?
(e.g. on Vax VMS, writing ESC ] 21; new_name ESC \
      to the screen would change the DECterm window name to new_name)

I'm using the csh shell, which doesn't seem to understand the echo "\xxx" syntax, so I'm not sure this is possible.

Thanks in advance.  Dave Wolinski