Thank you for your work on gv. It's a great program. I am now using version 3.6.1 of the program.
I use it as a display for a program that writes out ps files. I use the
kill -1 (or hangup) to refresh the screen when i generate a new plot.
this used to work ( i can't recall what version that was) , and the
documentation says that it should, but that kill signal now just kills