The wiki already does have checkbox lists on some pages (eg.
https://wiki.project1999.com/Magician_Epic_Quest) and potentially they could be added to the spells pages, but ...
- because they use "local storage", they can get lost when you change browser, clear cache, use different machines (or phones), etc.
- many people wouldn't use the checkboxes, so for them it'd make the wiki worse
- what if you have two characters of the same class (eg. I have blue/green Clerics)?
I really think a better idea is to create a Magelo (
https://wiki.project1999.com/Magelo) for your character, and keep track of spells on it (you can add extra text beside the Magelo itself;
see mine).
Except ... there's one final issue: the wiki is half-broken ATM, so you can't use the Magelo feature. Once it gets fixed though, a Magelo should work well.