[BBGiovanni]

When a pitcher can't, or won't, throw a strike, you may want him to serve up a pitch to hit. It might go at someone and get caught for an out, but at least he won't walk another batter.

In theory. Because if you get this desperate he probably doesn't know where the ball is going anyway. But you may be stuck with him because the rest of the bullpen is tired, there was a rain delay, etc. Whoever described this as the opposite of "pitch around" has it right, and no, it doesn't always work. Neither does telling someone to steal or to pick off a runner.

"Visit mound" does one or more things. It wastes game time, so if you have warmups on, this gives your reliever extra time to finish warming up. Yes, this is dumb and a waste of time but that's how baseball works.

In real baseball, it is also used to give pitchers a breather when they have thrown a lot of pitches in an inning (more than 20) or help them calm down/focus after giving up a couple of hits or walks. Sometimes the pitcher can get the last out of an inning, double play grounder, etc. And, just like pitch around/pitch to contact, it doesn't always work. Because if you had Jacob deGrom throwing a no-hitter on 20 strikeouts, you wouldn't need to tell him any of those things.

I think all these commands model baseball fairly well; the manager tries them to help a pitcher out of a jam, and sometimes it works.