Create an Instinct entitled “Playing in the Sandbox”, with the text:

There is an Inclination entitled “Sandbox”, which is always the highest-numbered Inclination.  Often, any voice may add one word to the end of this rule, and optionally any punctuation that would be immediately adjacent to this word (such as a period or colon).  Any addition to the Sandbox must be grammatical, and if it does not complete a sentence, must allow for a grammatical conclusion to the sentence.  Incomplete sentences have no effect until terminated by a period. 

Paragraphing, and similar formatting, may be added by the Ego at any time.  The Ego may also delete words from the end of the rule at will.

And, since I forgot to include this earlier, add to the last paragraph of “Priority” ‘Any rule that allows a Declaration of Victory must be an Instinct’.