I am currently looking at this documentation page and seeing that you can use Show Globals() or Show Symbols(). In this case I would like to know what all is in the Here scope specifically.
Sorry I would delete this question as it's actually pretty straightforwardly answerable once you realize that Here is just a normal Namespace. The answer is:
Namespace( "here" ) << Get Keys
You can also use Help > Scripting Index > Functions > Programming: