Number after badge

What’s the meaning of the number after a badge in tags?

E.g. Moderator/1 vs Moderator/0

Current TMI tag format:
...badges={badge_set_id}/{badge_set_version},{badge_set_id}/{badge_set_version}...

Moderator/1 means the user is a moderator, /0 means the user is not a moderator. It’s a bit flag, also used for subscribers
I haven’t actually tested it, but it might actually be whether or not the badge is displayed, so this could change depending on prime display and bit badges.

See 3ventic’s reply, and here:

…no. That’s for the other tags. Badges only includes badges that are to be displayed.