Options for posting source code are confusing.

Maybe this is a contributing factor to why so few get it right?

There are three options in the various menus which all mention "code":


How on earth is the average user supposed to distinguish those three - and select the correct one?!

Yes, I know (now) which is the one to use to post program source code - that's not the point.

But I still have no idea  what "Insert Embed Code" is supposed to do!