PHost is invoked as follows:

phost [-options] game-directory [root-directory]

The options can contain any number of option letters as described below. You can merge multiple options if you wish, -riT is the same as -r -i -T. Options must precede directory names.

The game-directory and root-directory parameters specify the game and root directory, respectively. Both default to the current directory if omitted. See A Word about File Names for tips for choosing your game directory name.