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<head>
<title>Ipe Manual -- 4.9 Layers</title>
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<body bgcolor="#ffffe6">
<table width="100%" cellpadding=0 cellspacing=2><tr><td bgcolor="#99ccff"><a href="manual_14.html"><img border="0" alt="4.10 Mouse shortcuts" src="next.png"></a></td><td bgcolor="#99ccff"><a href="manual_4.html"><img border="0" alt="4 General Concepts" src="up.png"></a></td><td bgcolor="#99ccff"><a href="manual_12.html"><img border="0" alt="4.8 Groups" src="previous.png"></a></td><td align="center" bgcolor="#99ccff" width="100%"><b>4.9 Layers</b></td></tr></table>
<h2>4.9 Layers</h2>
<p>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 <a href="manual_5.html">back-to-front ordering</a> of
objects, so the layer is really just an attribute of the object.
<p>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.
<p>When editing a page in Ipe, there is one <em>active layer</em>. New
objects are always created in the active layer.
<p>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 href="manual_29.html"><em>page
views</em></a>, which defines in what order which layers of
the page are shown.
<hr />
<table width="100%" cellpadding=0 cellspacing=2><tr><td bgcolor="#99ccff"><a href="manual_14.html"><img border="0" alt="4.10 Mouse shortcuts" src="next.png"></a></td><td bgcolor="#99ccff"><a href="manual_4.html"><img border="0" alt="4 General Concepts" src="up.png"></a></td><td bgcolor="#99ccff"><a href="manual_12.html"><img border="0" alt="4.8 Groups" src="previous.png"></a></td><td align="center" bgcolor="#99ccff" width="100%"><b>4.9 Layers</b></td></tr></table></body></html>
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