I do not think there is a list of all the possible commands in the config.div file, though some of them are self explanatory.

Other than the resolution, the main editable command is the one to show the intro movies ("startup logo 1"). Changing the 1 to a 0 (or adding the line if it does not exist) will automatically skip the intro movies.
With the latest game version, this will also eliminate the need for the play CD, except for a couple cases (the blessing ceremony after hitting the gong late in the game, and at the end of the game). These are the same limitations as with the no-CD hack.

Some entries in the config.div file are only added after relevant changes are made in the game options. I'll post the contents of my config file below, though I don't know how complete it is (it's longer than the default version, anyway).
Note the blank line at the end; the game expects the last line of the file to be blank, and will ignore any edited contents there.

Quote
// display width
width 1024

// display height
height 768

// activate smooth mode
smooth 1

// global contrast
contrast 1.000000

// global gamma
gamma 1.350000

// show the intro movies
startup logo 0

// enable quickstart
quickstart "on"

// use compressed image lists
images compressed

// use flat file system
flat files

// enable/disable z-tunneling
ztunnel 1

// set the memory limit
memory limit 32

// enable/disable the use of bitmapped fonts
use8bitfont 1

// disables fog rendering
no fog