[Bug-apl] Bug in my knowledge..

[Peter Teeson]

This is a bug in my brain but related to GNU APL.
Last time I used APL was when I worked at IPSA.
The language has been extended since then.

I have the ISO Standard and even the IBM APL2 Language Summary & Programming 
Guide.
What can I read for a summary of the differences between the APL I know/knew 
and GNU APL - ISO 13751?
(In my days at IPSA I shared an office with one of the authors of the ISO std)

TIA & respect

Peter