A nice succinct answer!
At 09:34 AM 6/16/2004, you wrote:
It means exactly what it says, really...
If it's an "E" type, it means that the execution of that command will be done by an external process. For example, when you compile a BASIC program, we execute our internal command "nbasic", which is the basic compiler.
If it's an 'I' type, it means that it's a self-contained routine/function within the core engine, and represents just a function call to execute that command.
If it's a 'B', we invoke the BASIC Run Machine
If it's a 'Q', it's treated as a query command, and sent to the query processor.
Internally, think of it as a big CASE statement. When at TCL, you are (internally) in a routine that gets the input you've typed, extracts from the VOC the first keyword to determine what to do, and then, depending on F3, it will invoke different 'handlers' .
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