I don't want to seem mean or anything. So, please don't take offence ^^; but: why didn't you parse it a more readable format and change it back into goobledigook when you wanted to use it?
That's a good question, and a fair one. I did take a few stabs at it, but other programmers resisted any changes to their workflow that would have been required if a different source code representation were used. They really could read that code by sight. The LIST annotator slotted right into their workflow by highlighting the numbers they wanted to focus on---the English-like representation to the right was almost completely ignored---the arrows and boldface highlighting in the numeric listing, along with the line numbers, were what they used. Editing still had to be done on the raw numeric files, in KEDIT.
Of all the tools I tried introducing, LIST was the only one that was adopted. It took off spectacularly well and was beloved.