The TRON framework define a complete architecture for the different computing units:
The specification of the TRON is open, but the source is not open. The TRON project permits the source to be protected and closed from the standpoint of the Intellectual Property.
External links
TRON is also a debugging command in the BASIC programming language. It is an abbreviation of TRace ON. It is used primarily for debugging line-numbered BASIC GOTO and GOSUB statements. When the TRON command had been executed, a window would indicate the line number being executed at that instant.
There is also a troff, or TRace OFF, command; it was used for turning the tracing off.