There are three groups that have special meaning:
Group 0: Words in this group are ignored. Examples of these sorts of words are "a", "the", "with", "my" etc. When the player types in "poke the bush with the stick", it is the same as typing in "poke bush stick".
Group 1: This group should contain only one word, "anyword". It can be used to respond to general statements such as "kill anyword", e.g. if the player types "kill alligator", "kill girl" or "kill plant" then the statement said("kill","anyword") will be TRUE.
Group 9999: This group should contain only one word, "rol". rol means rest of line, e.g. if the player types "fight", "fight beast" or "fight beast with sword" then the statement said("fight","rol") will be TRUE.
You can edit the words.tok file with the WORDS.TOK editor