Me
From Tapestries MUCK
me is a keyword that can be used in a great many situations to reference yourself or the player triggering a piece of MPI code. Similar keywords for different situations are here and this.
Examples of Me
If you type @set me=someprop:somevalue it will set that prop on your character
If you type wixxx me the muck will display your character's wixxx
In MPI, you can use the variable me to specify the player triggering the MPI code.