The shelf, not the trash
A deadline you've set down is not one you've finished, and not one you've thrown away. It needs a third place, and most tools never give it one.

Some work goes quiet without ending. A project pauses while a decision sits with someone else. A filing waits on a date that hasn’t been set. The thing is not done, you haven’t given up on it, and it does not belong in your face every day in the meantime. So where does it go?
Most tools force a bad answer. They give you two states, done and not done, and a delete button for everything else. Set-aside work has no home, so it lands in one of two wrong places. You mark it complete, which is a lie, because you have not completed it. Or you leave it active, where it clutters the list you look at every morning and keeps nagging you about a date you can do nothing about yet. Neither is true. The tool made you choose between two falsehoods.
Two states is one too few
Status is one of the four axes of attention the tool tracks, and for a while it had only two values. Active and completed. They answer the question “am I done?” but they cannot answer “have I set this down?” Those are different questions. The first is about whether the work is finished. The second is about whether it is on your plate right now. A deadline can be unfinished and off your plate at the same time, and a tool that cannot represent that is asking you to pretend.
The fix was a third state, and the discipline was to make it mean exactly one thing. On hold. Not “in review,” not “blocked,” not “waiting on someone.” Those are notes about a deadline, not states of attention. On hold means one specific thing. I have set this down on purpose, and I will pick it back up.
The shelf, not the trash
The word that matters is “shelf.” A shelf is not a trash can. When you set something on a shelf you are not throwing it away, and you expect to find it again. So on-hold work behaves the way a shelf behaves, not the way a delete behaves.
It leaves the active list, so your daily view stays clean. It stops sending reminders, because nagging you about work you deliberately parked is exactly the noise the tool exists to remove. But it does not vanish. It lives on its own surface, and the sidebar carries a running count of what is on the shelf, so you always know how much you have set down. One click brings any of it back to active. Nothing about it is destroyed, and nothing about it is hidden.
That count is the whole point. The danger with set-aside work is not that you stop looking at it every day. That is what you want. The danger is that “out of the daily view” quietly becomes “out of mind,” and three months later you discover the thing you shelved was the thing that mattered. A number you can see, sitting in your sidebar, is the difference between a shelf and a hole in the floor.
One deadline, one home
Behind the three states is a rule the whole product follows. Every deadline has exactly one home. Active deadlines live on the dashboard. Completed ones move to the Completed surface, where they stay as a record. Set-aside ones wait on the On Hold surface. A deadline is in one of those three places and never two, so nothing is double-counted and nothing falls into the gap between surfaces.
This sounds obvious until you notice how many tools break it. A “done” item that still shows up in a count. An archived thing that is really just hidden, recoverable only if you remember the exact filter that reveals it. A status field with seven values, three of which overlap, so the same task can plausibly be two things at once. Each of those is the same failure. A piece of work without a single, honest home.
Completed is the one terminal state. When you finish something it goes to Completed and stays there as the record of what you did and when. There is no “un-complete,” because completing is a real claim about the world, and the tool should not let you quietly walk it back. The shelf is for the work you have paused. The record is for the work you have finished. The dashboard is for the work in front of you. Three places, one each, and a deadline always knows which one it is in.
Most tools give you a trash can and call it a filing system. The honest version is a shelf you can see, a record you cannot rewrite, and a plate that only holds what is actually on it.
Common questions
What is the difference between On Hold and snoozing? Snooze is for a short, dated pause. The deadline stays on the dashboard as a faint row and comes back on a day you choose. On Hold is for an open-ended pause with no known return date. It leaves the dashboard entirely, lives on its own surface, and waits there until you bring it back by hand. Snooze says “not this week.” On Hold says “not until something changes.”
Can I get an on-hold deadline back? Yes, in one click. On Hold is a recoverable shelf, not a delete. Reactivate sends it back to the dashboard, and you can also mark it complete or delete it from there. Nothing on the shelf is destroyed by being set down.
Will I forget about something I put on hold? The sidebar shows a count of everything on hold, so set-aside work stays visible even though it is off your daily list. That number is there specifically so “out of the daily view” never turns into “out of mind.”
Why can’t I un-complete a deadline? Completing is a claim that the work is finished, and the Completed surface is the record of what you actually did. Letting you silently reverse it would make that record untrustworthy. If a finished thing comes back to life, it comes back as a new deadline with its own new date, which is the honest way to represent “this is happening again.”