Actually, I just made an astounding discovery!
If you open the Hamilton HSL Method Editor, then open the Help option, it will show an HSL reference library! All the keywords, functions, syntax, etc.
Damn I wish I could have found this earlier, because Hamilton does NOT make this obvious. I guess it makes sense that it is contained within the VENUS software itself as a help file, since they likely are very guarded about their proprietary stuff.
I think that’s why I couldn’t find any of it online - they likely want only those who purchase the VENUS software to have access to it. Oh well, I’m making some PDF copies of this stuff anyways. Hope that doesn’t violate copyright.