# The Outline Icon

The “icon” that appears next to the disclosure triangle in the outline conveys a host of information in a very small space.

- The Color of the icon’s border is the color of the note.
- The “title bar” of the icon indicates whether the note is a container (title at the top) or an agent (title at the bottom). If an agent is turned off, it's title bar is hollow.
- The text lines inside the icon indicate whether the note contains any text, and roughly how long the text is.
- The interior color of the icon reflects how recently a note has been edited. A newly-created note is light blue. Over the course of a day, the note “dries” to a neutral white, and then over the span of a year it gradually yellows.

Right-click the icon to displays the note’s Prototype menu.

Double-click the icon to focus on or “hoist” the note, focusing the window on the note and its descendants.