List deleted and completed tasks:
task status:deleted or status:completed all
To change the status of completed task to pending [Tom Ordonez]:
1. Find UUID of the task you want to bring back
task completed
2. Modify status:
task ⟨UUID⟩ modify status:pending
Script to purge all completed and deleted tasks
Update all overdue tasks [Tom Ordonez]:
task +OVERDUE mod due:today
List tasks tagged as work or home:
task tag~work or tag~home list
Show tasks added in last 3 days:
task entry.after:today-3days list
task ⟨ID⟩ modify wait:⟨date-and/or-time⟩
List waiting tasks:
task waiting
task color legend
task _tags
The virtual tags are all upper case. Customs tags can be anything that doesn't intersect with virtual tags, so it's a good idea to keep them lower case, but not required.