Regarding the second example (blind /see), I have seen code on quite a few old machines that use this style instead of a ONS. Was this at one point the standard way? Or was that just a programming choice made by that particular person.

Damn i was close! I called out the ons but not for right reason

Would it help to show the IL or mnemonics to help people understand there is an actual step of low level instructions, vs. actual "power flow" emulation of an actual relay circuit. This is one of the reasons I like to use SET and RESET coils vs. latching input logic like you have (but I understand the latch input pattern, but as you described, behavior is not obvious). The one thing I do like about the input logic based latches is that you also program the "reset" logic in the same rung. This latch/reset rung pattern has been around for decades, but it still requires explanation of the "input contact" behavior of the "latching coil". The SET and RESET coil pattern typically is across multiple rungs (with "reverse logic" on the RESET rung - good application of DeMorgan's Law!)

The one shot is a TTL trigger. Like on a D flip flop. Maybe JK flop

Rung 0 doesn't do anything since I (XIC) switch's it on or off with no other conditions. Not a good example of a one shot. Sorry.