#Tandem Guardian User’s Guide #PDF, 1993–2000, with a #TACL #tutorial and a bunch of other sysadmin stuff. Apparently “NSK” is “NonStop Kernel”. Apparently “supergroup” user ids are (255,n), and “EDIT files”, file code 101 are the kind of file that TACL scripts are stored in, and that’s what TEDIT creates. The TACL command interpreter program is in $SYSTEM.SYSnn.TACL for some number nn. Explains users, groups, etc.; rather surprisingly you can run your command interpreter as a failover process pair: “If you want the remote TACL process to run as a NonStop™ process pair instead, enter \HERST.TACL / NAME, CPU 1 / 2.” It had command-line editing that sucked total shit.
A #Tandem #TACL program. The #syntax looks shitty but at least it supports structured control structures: [#IF [I1] < 1 |THEN| [<a href="../tag/set.html">#SET</a> I1 1]]. The [] are the equivalent of $() or $ in ksh.