Self
Pushes the partUID of the current part to the stack. Every ship consists of at least a 'unit' and a 'part'. Optional nested parts may also exist. Any part may have an attached script. Use 'self' to reference the part that the script is attached to. Note that unit UID's are permanent and persist over save/load.
Note: When run in Console scripts, or in Global Control (Pre or Post), -1 is returned.