Sections sidebar

Numbered section headers turn a long sheet into a document you can jump through. Mark a text region as a section, then open the Sections panel on the right to go to that heading.

Mark a section

1. Insert or select a text region. Type the heading.
2. Open the Text ribbon tab.
3. In the Sections group, choose Section.
4. Set Level to 1, 2, or 3. Level 2 and 3 nest under the previous higher level (1.1, 1.1.1).
5. Leave Number blank for automatic numbering, or type an override.

Choose Section again on a selected header to clear the mark. The region stays; it is just ordinary text again.

Open the Sections panel

Once the sheet has at least one section, a bookmark button appears on the right edge of the window (above the AI button if that is visible). Click it to open Sections. Click a row to scroll that heading into view. Close the panel with the chevron in its header, or drag its left border to resize it.

The panel stays hidden on a sheet with no section marks, so a scratch pad does not grow extra chrome.

Section table

On the Text tab, Table inserts a section table — a clickable list of every header, including in the exported PDF. Use it as a contents block near the top of a long calculation. Details belong with Text and structure; the sidebar is for jumping while you edit.

Continue with Regions for the block types, insert and resize, clipboard, and evaluation order.