This plugin aids UV mapping by performing the process called unfolding or
unwrapping.
The following figure shows the standard Human/Heads/Caucasian_Male.lwo
mapped by this plugin.

The following shows an example of resolving an overlap of UVs using UV
fixing.
The figure below shows the head of the standard Animals/Triceratops.lwo
mapped by this plugin.
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3D mesh
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UV Texture view
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The upper jaw and the lower jaw overlap on UV plane.

A point of the upper jaw was selected and moved right to move the upper jaw
right.

A point of the lower jaw was selected to fix the lower jaw.

One more point at the back of the head was selected to fix the whole.

This figure shows the head mapped by this plugin with the above 3 points
selected.

The overlap of the jaws was resolved.