"Addins" are sets of Words and Actions for specific programs or purposes. The Addins have the file extension ".awdb" and when opened will insert the Addin content into your local ActiveWords data. Addins can be found here.
For example, English Misspellings includes over 3,400 Actions that will automatically correct over 5,300 commonly misspelled English words as you type.
Each Addin has a Tag to make it easy to locate and edit as needed.