Ill buy if you can explain how to install exactly and if it has the following feature
 

Bold

Italicsize

Word Hyperlink (make any string of letters like "abc" link to any site, instead of just having "http://www.abc.com" link to "http://www.abc.com" I can have the string of letters "abc" or "xyz" link to "http://www.abc.com" or any other site)

Size variation of characters to be bigger AND smaller than default

over 9,000 characters per post ( lol but seriously at least over 800 )

Dark theme available that's easy on the eyes

Ability to edit posts

Honestly, I can already see all these features in typing this message.

So I guess my only question left is from buying this .zip package, as I understand it, how do I then install it?

And how am i supposed to figure out this information in a way other than bothering the community?