These BBCode tags are for use on character sheets rather than posts.
Columns
BBCode:
[2column]
[col]
This is in column 1
[/col]
[col]
This is in column 2
[/col]
[/2column]
Result:

Columns tags are used to organise the content of your character sheets into columns. 2column and 3column tags are available, with the col tags containing the content of each column.
Abilities
BBCode: [abilities="Abilities"]
# Example heading 1
Example ability 1 description
Supports multiline and BBCode
# Example heading 2
Example ability 2 description
[/abilities]
Result:

Character sheet integration:
The abilities tag is used to organise your character's abilities, talents, spells, and any other lists of features. The quoted attribute is the name of the abilities section. Each heading starts with a # and the following text will then be rolled up into a dropdown.
Abilities are available from your integrated character sheet during a game. Selecting an ability will add the ability's text to your post inside a collapsible spoiler.
[ +- ] 📺 Video tutorial
[youtube]https://youtu.be/17ld3jysJcA[/youtube]
Snippets
BBCode: [snippets="Maps"]
# Tavern
[map]
https://otfbm.io/26x14/@c60/b5:10x6
--Tokens
/f7-Alice
/h8-Bob
?bg=https://i.imgur.com/jIpAjkT.jpg
[/map]
# Fighting pit
[map]
https://otfbm.io/26x14/@dc60
/m7l-Ogre~gnstt
?bg=https://i.imgur.com/WgZSt8g.jpg
[/map]
[/snippets]
Result:

Character sheet integration:
Functionally, snippets work in a very similar way to abilities but when they are used they don't include the spoiler tag. Their main use is for GMs to prepare box text and other material for use in their game. The snippets can then be selected from a GM custom character sheet and the BBCode inserted into their post.
Roll tables
BBCode:
[table="rolls"]
Weapon | To hit | Damage
Longsword (1h) | 1d20+5 | 1d8+3
Longsword (2h) | 1d20+5 | 1d10+3
[/table]
Result:
Weapon | To hit | Damage
|
Longsword (1h) | 1d20+5 | 1d8+3
|
Longsword (2h) | 1d20+5 | 1d10+3 |
Character sheet integration:
The rolls table is formatted like a ht table (table with a heading at the top), but the main use is that any dice rolls integrate with your character sheet and the dice roller.
NPC lists
BBCode:
[npcs="Undead"]
Ghast | https://i.imgur.com/vvoamvX.jpg
Zombie | https://i.imgur.com/yJU4pFf.jpg
Ghoul | https://i.imgur.com/T4ek2Bk.jpg
[/npcs]
Result:
Character sheet integration:
The quoted attribute of the npcs tag allows a GM to group their NPC.
Each line of the npcs tag corresponds to an npc. The format is the name of the npc, followed by a |, then the URL of the npc's avatar.
Snippet
BBCode:
[snippet="Catchphrase"][b]"Hello, my name is Inigo Montoya.
You killed my father. Prepare to die."[/b][/snippet]
Result:[ +- ] Catchphrase
"Hello, my name is Inigo Montoya.
You killed my father. Prepare to die."
[b]"Hello, my name is Inigo Montoya.
You killed my father. Prepare to die."[/b]
Character sheet integration:
A snippet appears like a spoiler on the character sheet, but it integrates with the game posts to allow a player or GM to select and add a snippet of BBCode. If you plan to have lots of these then the snippets tag (above) might be preferable.
Custom character sheet logo
BBCode:
[style]
{"logo":"https://s3.amazonaws.com/pmgr-stg/projects/3722/project-logo.png"}
[/style]
Result:

This is used to provide the logo of a custom character sheet.