Collapse Subheads is a command on the Headlines submenu of the Outline menu. It collapses and temporarily hides from view the subheadlines of the currently selected headline. Depending on the label style of the headline, MORE uses special symbols to indicate when there are collapsed subheadlines below.
You also can collapse subheadlines with any of the following methods:
• Double-click to the left or right of a headline.
• Select the headline and then press Command - (minus).
• Hold down the Option key while double clicking on the text of the headline.