I think I've fixed the Gold/up arrow problem (that was, typing a gold/up arrow
while the main window was full screen would sometimes lockup the cursor; you'd
have to type gold/down and another gold/up to unstick it). 

I also fixed the line mode substitute command to accept delimiters other than
"/". As it stands now, any printable special character (i.e. any non-alphabetic
or non-numeric) can be used as a delimiter. Also, if there is no range 
specified, you don't need the trailing delimiter (as with EDT).

ds