The `me` module provides access to the
machine environment.  Most of these work
only on robots; on the Home Computer,
only `me.screenColor`, `me.name`, and
`me.isBot` are functional.

Read-only properties:
 `me.isBot`: 1 if robot, 0 if computer
 `me.position`: current tile position
 `me.facing`: 0=north, 1=east, etc.
 `me.energy`: energy left (0-270)
 `me.inventory`: list of items carried
 `me.here`: same as `me.position.area`
 `me.ahead`: info on tile ahead of me
 
Read/write properties:
 `me.name`: robotbot or computer name
 `me.screenColor`: screen background color
 `me.currentToolIndex`: selected item
 `me.statusColor`: color of status light

Methods:
 `me.forward`: move forward 1 tile
 `me.left`: turn left
 `me.right`: turn right
 `me.select toolNameOrIndex`: choose item
 `me.placeItem`: place item down
 `me.takeItem`: take item from chest
 `me.harvest`: harvest a crop/item
 `me.useTool`: apply current tool
 `me.clearAhead`: choose/apply tool
 `me.clearAndMove`: clear ahead and move
   (optionally specify # of tiles)

Note that each robot must be given a
suitable set of tools for the tasks you
program them to do.
