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These are the keywords that tell the CLI what action to take.
The listed actions listed correspond to nearly everything you can do via the screens on the app by pointing, clickingwhen you point, click, and typing type text into fields.
You see a pattern to the beginning or prefix that is an action verb such as: add, copy, export, get, modify, move, remove, run, store, update, and more depending on the app.
The ending or suffix to the action name is the noun or object of the verb such as attachment, comment, label, permission, user, and more depending on the app.
For example, the action addComment adds a comment to an item in the app. Not all actions are available for all apps because not all apps have the same features
Each app has its own features and set of actions, in addition to the actions shared with other apps.