Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've never seen this side column in an Excel worksheet before. What is it called?

Clicking on the '2','3', and '-' buttons seem to show/hide rows 3-4; clicking the '1' button seems to do nothing.

mysterious side column

share|improve this question

migrated from Sep 13 '11 at 8:26

This question came from our site for professional and enthusiast programmers.

up vote 2 down vote accepted

It is data grouping / outlining.

Check the Data tab/menu, specifically the "Outline" commands, group, ungroup, and subtotal.

Search help for "group" or "outline"

Outline (group) data in a worksheet at

share|improve this answer

This is the "outlining" feature of Excel. It allows you to group rows together so they can be expanded/collapsed easily. It is useful if you're making a sheet that has heirarchical data in it. I'm not sure about Excel 2010, but in earlier versions, you can access the feature via Data -> Group and Outline.

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .