What are the commands

Welcome to What are the commands.

This is made by User:Esolangist and it is the 2nd esolang experiment (1st: You make the esolang)

I will give you programs and you will guess what the commands do from all of them combined!

Programs

p`Hello, world!`o

ipIo

p`p`Hello, world!`o`c

i[I℅p$0$o]p$1$o@

p$4$op$31$o‹mn$2›

You are free to edit this, just add a new subsection. Example:


===(you)===
I think [] works as a loop...