On Tue, Jan 15, 2013 at 12:13 PM, <Paul_Koning at dell.com> wrote: PL/C I remember as a hopelessly unreliable piece of junk I was forced to use at the University of Illinois, under OS/370. I don't remember it on other platforms. I can not comment one way or the other, as I never either saw it's guts or used it for anything other than as a toy compiler on TSS. We had the real IBM compiler which is what I used there. PL/360 was Wirth's 1967 subset language used to write AlgolW