The <Del> key is not set up as the delete character for dtterm,
which instead uses <Ctrl>C as the delete character by default.
To use <Del> as the delete key, execute the following command in the dtterm
window:
stty intr ^?
``^?'' consists of the two characters ``^'' and ``?''.
Middle mouse button access
If you have a two button mouse, then a middle button mouse click may be
generated by holding down and releasing the left and right buttons of the
mouse simultaneously. However the middle button simulation can be unreliable
with dtterm on the CDE desktop.
If after installation you decide to use a three button mouse then change the
value of MOUSEBUTTONS in /etc/default/mouse from
2 to 3 and reboot your system.