this is obsolete doc -- see http://doc.nethence.com/ instead

Twm configuration 

http://pbraun.nethence.com/doc/x11/x11.html 

http://pbraun.nethence.com/doc/wm/twm.html 

http://pbraun.nethence.com/doc/wm/blackbox.html 

http://pbraun.nethence.com/doc/wm/wmaker.html 

Configuration 

Copy the default config to your homedir and edit, 

cp /path/to/system.twmrc ~/.twmrc

cp .twmrc .twmrc.dist

chmod 644 .twmrc

vi .twmrc

add those lines at the top, 

OpaqueMove

RandomPlacement

BorderWidth 0

AutoRaise { "XTerm" }

#AutoRelativeResize

#NoTitle

add/change those lines for window resizing with (Alt + left/middle/right click), 

Button1 = m : window|icon : f.move

Button2 = m : window|icon : f.iconify

Button3 = m : window|icon : f.resize

remove entries from the menu and fix the xterm call, 

rxvt -geometry 80x50

change from green to e.g. dark purple. replace occurences of "rgb:2/a/9" by, 

#800080

Purples : http://www.december.com/html/spec/color4.html 

References 

Xorg 6.8.0 twm manual : http://www.x.org/archive/X11R6.8.0/doc/twm.1.html 

XFree86 4.4.0 twm manual : http://www.xfree86.org/4.4.0/twm.1.html