[techtalk] dynamic xterm titlebar?

[Dennis Wheeler]

Is there some series of commands I can enter at a shell prompt to
dynamically change the title bar of an XTerm session?

I already know the basics of how to change the titlebar as described in
the bash-how-to, and have experimented with various changes in my
/etc/bashrc file, including getting the titlebar to dynamically display
the last few folder names of my current working directory. But I
can't............

!@#$%  I didn't even finish typing and I've already solved my own
problem.

/etc/bashrc
  TITLEBAR='\[\033]0;\$(echo \$PROJ)\007\]'
  PS1="${TITLEBAR}[\u@\h \W]\\$ "


now I can export PROJ to any new value at any time and dynamically
change my XTerm titlebar.

-- d
ps - I sent my question (and answer) anyway, more for my own records.