4 ==> To use the dark_gray patch you must add
5 ==> OPTIONS=use_darkgray in your .nethackrc
7 ==> In order to use the X11 interface write
8 ==> OPTIONS=windowtype:X11
11 ==> You can change the tileset by specifying
12 ==> an xpm file in /usr/share/nethack/NetHack.ad
13 ==> instead of the default (ugly?) x11tiles