The procedure block is something funny, since its main mechanic is that it has 20+ funny, sometimes not, events, each of them is different from each other and does something completely different. But you won't know all the commands. The main meaning of the mod is to solve some commands, which will consist of either questions,
the answers to which are commands, or tasks such as find missing letters and etc. There are also about 5 pretty funny things, as well as a couple of achievements for them.
How can I get this block?
/give @p procedure_block:procedure_block or you can craft it. Here goes the craft:
What should I do next?
You need to craft the guide item. Here goes the craft:
How I can get this advancement?
You need to know the secret code.