If you look at the last picture Lenar posted, you will notice that the indicators are treated completely different (the iBuffer statement in that source) from the way they are treated and accessed right now, and that is just that short piece of code. I can just imagine the rest of differences (see the left bottom corner of that picture and a library of functions). So : rewriting everything (if I remember correctly, it was already Rosh that told that, but then I did not believe it )

Good news is that there is a debugger

A lot of work ahead