In the new version, there will no longer be a dedicated item type, action, as in the current release. Instead, tasks, events and records can have one or more @u (used time) entries in addition to the previous @e (extent) entry. The used time entry is a (period, datetime) tuple with the interpretation that the "period" ending at "datetime" was "used" on the item. A special accounting method will be provided by the new version to aggregate such @u entries by month and the @i index entry of the item and produce reports similar to the current action reports using the summary of the item as the summary. With index entries of the form "account:project", for example, reports would aggregate used time by month, account and project.
The work flow for using a timer to create an @u entry is first to select a task, event or record and then press T to start a timer. Subsequent T presses pause and restart the timer and, finally, ^T (control-T) stops the timer and adds an @u entry with the elapsed time and the time stamp at which the timer was stopped.