screen setup with scrolling

dot/screenrc

+startup_message off
+defscrollback   4096    # size of scrollback buffer (lines)
+
+# alt-pg{up,down} to scrollback in history
+# http://lists.gnu.org/archive/html/screen-users/2007-03/msg00029.html
+bindkey ^[[5;3~ eval "copy" "stuff \"^u\"" # alt-pgup goes to copy mode
+bindkey ^[[6;3~ eval "copy" "stuff \"^d\"" # alt-pgdn goes to copy mode
+bindkey -m ^[[5;3~ stuff "^u" # alt-pgup sends page-up in copy mode
+bindkey -m ^[[6;3~ stuff "^d" # alt-pgdn sends page-down in copy mode
+
+# enable alternate screen, like in xterm
+altscreen on