Those are all from JASS.
If you're using Jass NewGen Pack, click on the map header in the trigger editor (in the trigger list, the map name), and on the right you'll see a button that says Function List, this includes all of these things.
The better way, would be to download JASS Craft. Should be in the tools section. You don't need to code in it, you can just search for functions.
If you have no idea what you're searching for, you can make a trigger, put in the GUI things you know, and then go Edit -> Convert to custom script.