|  |  | 3.9 Layers

## 3.9 Layers

A page of an Ipe document consists of one or more layers. Each object on the page belongs to a layer. There is no relationship between layers and the back-to-front ordering of objects, so the layer is really just an attribute of the object.

Layers have several attributes. They may be editable or locked. Objects can be selected and modified only if their layer is editable. A layer may be visible, invisible, or dimmed. A layer may have snapping on or off--objects will behave magnetically only if their layer has snapping on.

Layers are also used to create pages that are displayed incrementally in Acrobat Reader. Once you have distributed your objects over various layers, you can create a page presentation sequence, which defines in what order which layers of the page are shown.

|  |  | 3.9 Layers