target for progress
I'd like to set a target progress for a task. E.g. I have 23 documents to process and I'd like to be able to switch between "I've done 17 of 23" and "I'm at 74%" view of progress.
Create a subtask for each document and the parent task will show you the percentage complete (turn on the percentage complete column and collapse the parent task to see it).
By default the parent task will count itself as one of the tasks todo, so if you have a task with two subtasks, one of which is completed, the parent task will show 33% completed. If you don’t want that you can change the “mark task completed when all children are completed” setting in the progress tab of the task edit dialog.