Comment timeline

The Comments card of a unit panel, the operator comments of the unit's active run, with the add, rewrite and delete conduct.

The Comment timeline shows the operator comments of a unit's active run, oldest first, each with its timestamp and the phase it was recorded in, plus an add box at the foot (see Runs and comments for what a comment records). A comment is part of the run record and can leave the station again in a report, so the timeline also carries the two gestures that keep that record honest: rewriting a line where it stands, and removing it.

It is the Comments card of the unit panel, not a component: the panel draws it for its own unit wherever the model's Panels keep that card on. It is never placed on a screen, and the dashboard's Add palette does not offer it. There is nothing to configure: the unit is the whole binding, and the panel supplies it.

What the header says

The header states what the timeline is reading, and on the unit panel it is the card's own head: Comments · <run name> during an active run, Comments · no active run while the unit is idle (the list is then empty), and Comments (unavailable) where the Process service is not running. Post-run notes are added from Histories, not from this timeline.

The list refreshes from the run file on a throttle (about every three seconds, and immediately when the run changes). A gesture the operator has open (a rewrite in progress, an armed removal) holds the refresh so the line is not rewritten under his hand; a run change is not held, because the run those gestures belonged to is gone.

Adding a comment

Type into the add box and press Add. The button is enabled only while there is an active run, the operator is permitted, and the draft is not blank. The comment is recorded under the signed-in operator (or the station when nobody is signed in), because a note is evidence too. A failure lands on the timeline's own answer line.

Rewriting a comment

Edit opens the line in place, on the text as recorded. Save (or Enter) commits; Cancel (or Escape) leaves the record as it was. A blank or unchanged text leaves the record alone; a real rewrite stamps the edit and persists it. This is the same commit the Histories grid applies to post-run comments.

Deleting a comment

Removing takes two presses, both in the line itself: an operating panel has no second surface to open a dialog on, and a removed comment does not come back:

1. Delete arms the row. Nothing leaves the run file yet; the row asks Delete this comment? This cannot be undone.
2. The confirming Delete beside that question removes the comment. Cancel keeps it.

Arming one line disarms any other open gesture: a line asking to be removed is not also being rewritten.

Permission

All three gestures take the Run procedures permission, on the Process page and on the View page alike, rechecked at the moment of the write, never only when the panel was drawn. While the operator may not write, the timeline stays readable, the add box and the gestures are disabled, and each disabled control's tooltip carries the reason.