Posting this in the hope that it might help some people grok what they are actually doing:
When I first discovered what Yoric and syg were doing, the first thing that I thought of was old-school Visual Basic. IIRC when you saved your source code from the VB IDE, the saved file was not text: it was a binary AST.
When you reopened the file in the VB6 IDE, the code was restored to text exactly the way that you had originally written it.
The parent might have been thinking of QuickBasic, which saved programs as byte-code, along with formatting information to turn it back into text: http://www.qb64.net/wiki/index.php/Tokenized_Code
BBC Basic did this too -- keywords were stored as single bytes (using the 128-255 values unused by ASCII). Apart from that the program code wasn't compiled, it just was interpreted directly. Very smart design when everything had to fit in 32KB of RAM.
When I first discovered what Yoric and syg were doing, the first thing that I thought of was old-school Visual Basic. IIRC when you saved your source code from the VB IDE, the saved file was not text: it was a binary AST.
When you reopened the file in the VB6 IDE, the code was restored to text exactly the way that you had originally written it.