If one wanted to collaborate on a code here, how would I do that?

Answer 1

use social media

Answer 2

「ＨＡＰＰＹ ＴＯ ＨＥＬＰ」 Mention?

Answer 3

Adding to what 「ＨＡＰＰＹ ＴＯ ＨＥＬＰ」 said, make sure the user knows what you’re doing. Many people such as myself don’t keep notifications on all the time. So be sure to have notifications on.

Answer 4

In the code?

Answer 5

You can't collaborate here as far as i know. But you can still comment on code to tell the coder to edit something.