2 Column and Number Management

Adding Columns

With nothing selected, the bottom of "Overall Settings" offers "+ Add Column". New columns snap to the grid with a default title, font size and dimensions.

Select a column to adjust:

• Title: up to 64 characters, with font, size, color and bold/italic/underline/shadow; can be hidden.
• Position: X/Y coordinates of the column's top-left corner.
• Size: drag the bottom-right handle; numbers reflow to the new width.
• Lock position: locked columns can't be dragged, but values and sizes still change in the panel.
• Columns: how many sub-columns numbers flow into, 1~32; widths split evenly.
• Vertical centering: numbers center as a whole; the top number's Y no longer applies.
• Disable double-click: double-clicking the column only selects it, avoiding accidental adds.

There is no hard cap on columns, but screen space is finite — plan zones on the canvas first, then add. Deleting a column deletes all its numbers; confirm before doing so.

Adding Numbers

Three ways to add:

1. select a column and click "+ Add Number" in the panel;
2. double-click empty space in the column;
3. select the column and press Space.

Then enter the content — digits, letters or Chinese, up to 512 characters, such as material call codes, meal pickup numbers or window numbers. New numbers append to the column end with line spacing derived from the previous number's font size.

Number Styles

Select a number to change its content, font, size, color and styling, or enable shake and scrolling marquee. Number-level styles inherit the column settings until set; edits affect only that number. Fonts and animations are covered in the "Appearance, Animation and Screen Control" chapter.

Only the topmost number in a column takes an individual Y coordinate; the rest flow below it. With "vertical centering" on, the centering rule decides positions and individual Y no longer applies.

Ordering and Cross-Column Moves

Order within a column follows list order, not Y coordinates. Supported:

• drag a number directly to a target spot;
• select it and press ↑ / ↓ to swap with a neighbor;
• use "↑ Move up" / "↓ Move down" in the panel.

Cross-column moves:

• drag the number into another column — it appends to that column's end;
• select it and press ← / → to jump to the end of the previous/next column.

Cross-column moves keep content and number-level styles, recalculating order and position in the target column.

Taken, Delete and Clear

Select a number and click "Mark Taken" — it leaves the screen but the record stays, shown as "taken". There is no "untake" button in the current interface; add a new number to show it again.

Deleting a number removes it permanently; deleting a column removes it with all its numbers; "Clear All" removes every column and number while keeping the background and overall settings. All these ask for confirmation and can be undone with Ctrl+Z before the page refreshes.

Auto-Cleanup and Display Rules

The system checks hourly and deletes numbers created more than about a day ago, refreshing the screen. That means:

• taken numbers just stop displaying — records are not deleted immediately;
• taken or not, records are cleaned up after about a day;
• long-lived content should not live in numbers — put it in the background image or an external document.

Display rules:

• Taken numbers never display.
• Regular numbers are clipped at their cell boundary and never overlap neighbors.
• To show long content in full, enable "Scrolling Marquee" — the text loops within the cell window.
• Content is capped at 512 characters; longer text should be split or moved into the background.