Thank you! I tried to look up examples from that time exactly. I missed linking to it in the article, but here it is: http://www.bitsavers.org/pdf/ibm/360/pli/G

Thank you! I tried to look up examples from that time exactly. I missed linking to it in the article, but here it is: http://www.bitsavers.org/pdf/ibm/360/pli/GC33-0009-4_PLI_Checkout_And_Opt_Compiler_Lang_Ref_Oct76.pdf http://www.bitsavers.org/pdf/ibm/360/pli/GC33-0009-4_PLI_Che... page 92. It's 1976, so a little newer. Did I follow a bait to a spec that wasn't about to catch on until another few years?