Declares an account. Accounts can be used to calculate costs of tasks or the whole project. Account declaration may be nested, but only leaf accounts may be used to track turnover. When the cost of a task is split over multiple accounts they all must have the same top-level group account. Top-level accounts can be used for profit/loss calculations. The sub-account structure of a top-level account should be organized accordingly.
Accounts have a global name space. All IDs must be unique within the accounts of the project.
An optional ID. If you ever want to reference this property, you must specify your own unique ID. If no ID is specified one will be automatically generated. These IDs may become visible in reports, but may change at any time. You may never rely on automatically generated IDs.