Go into the Community search function, enter "ChatSetAttr" and you will find a treasure trove of instructions that people (including myself when I was first introduced) applied. Keep in mind that both ChatSetAttr (thank Jakob) and TokenMod (thank TheAaron) are both power scripts. They encompass a tremendous amount of functionality for the Character Sheet and Character Token, respectively. Many people, including myself, find new and interesting ways to expand these scripts' functionality beyond what the authors originally designed, and they have become quite extensive. Once you get the lingo, you will find that they are very versatile in doing a countless many things. For my campaigns on Roll20, they are an absolute must have. That being said - being power scripts - they require a bit of learning. You should get very familiar with the basics of deciphering much needed references first and foremost. For that, I recommend this very simple code snippet: /w gm &{template:default}{{name=Identifiers for @{selected|token_name}}}{{Token Identifier (token id for tokenmod)=@{selected|token_id}}}{{Character Identifier (character id for CSA)=@{selected|character_id}}} After running that, you will see both a token's id and relative character sheet id. VERY IMPORTANT when running any macros, not just tokenmod and CSA! Next thing is finding references to most things you want. Now, there are methods that involve lifting many things from browser developer tools and the like, but - as you will - I like to get things simple and fast (I blame microwaves and cell-phone technology for this habit, but I digress). Easiest method, if you have some understanding of it, is to go to the Attributes and Abilities tab of any character sheet. WARNING: Oversight by Roll20 - they did not prevent you from deleting one of these Attributes by accident hovering over and clicking the X that appears. BE very mindful of where your pointer rests on this page, there will be no "Are you sure?" prompt if you accidentally click that X. You have been warned, and this can mess up your sheet fairly badly! Anyway ... For both CSA and Tokenmod, a fair amount of documentation is right on your API Settings page when you click the relative API as long as you selected it from the One-Click drop down menu. The only APIs you shouldn't load from the One-Click are your character sheet APIs and one's that haven't been uploaded to the One-Click that you can find elsewhere such as an author's github. Character sheets should be updated from the ground up - not just their API, in case dependencies where new features were added to the character sheet that the API needs to find or it fails, which can be a real fail for your campaign if character information goes missing. But otherwise, loading from One-Click means that new updates will always happen on Tuesdays to the one's loaded on your game. New Updates = New Features! As far as finding specific uses, I highly recommend the forum searches - I have never seen a community that is as helpful and interactive as the Roll20 community. If you can't search something here, ask, it will get answered. Just follow the community guidelines.