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Introduction
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.. figure:: /images/render_freestyle_parameter-editor-mode.png

   Parameter Editor Mode.


The Freestyle *Parameter Editor Mode* is a user-friendly interface
to define and control line sets and line styles.

:doc:`Line Sets </render/freestyle/parameter_editor/line_set>`
   Control which of the edges detected by Freestyle will actually be used (rendered).
:doc:`Line Styles </render/freestyle/parameter_editor/line_style/introduction>`
   Control how the selected edges are rendered.

A view map (hence a render layer) can have multiple line sets,
and each line set is linked to one line style.