flag</a> is set.
<dt class="idl-code">void lineWidth(GLfloat width)
<span class="gl-spec">(<a href="http://www.khronos.org/registry/gles/specs/2.0/es_full_spec_2.0.25.pdf#nameddest=section-3.4">OpenGL ES 2.0 §3.4</a>, <a class="nonnormative" href="http://www.khronos.org/opengles/sdk/2.0/docs/man/xhtml/glLineWidth.xml">man page</a>)</span>
+ <dd>
+ See <a href="#NAN_LINE_WIDTH">NaN Line Width</a> for restrictions specified for WebGL.
+ </dd>
<dt class="idl-code">void pixelStorei(GLenum pname, GLint param)
<span class="gl-spec">(<a href="http://www.khronos.org/registry/gles/specs/2.0/es_full_spec_2.0.25.pdf#nameddest=section-3.6.1">OpenGL ES 2.0 §3.6.1</a>, <a class="nonnormative" href="http://www.khronos.org/opengles/sdk/2.0/docs/man/xhtml/glPixelStorei.xml">man page</a>)</span>
<dd>
</ul>
</p>
+<h3><a name="NAN_LINE_WIDTH">NaN Line Width</a></h3>
+<p>
+ In the WebGL API, if the <code>width</code> parameter passed to <code>lineWidth</code> is set
+ to NaN, an <code>INVALID_VALUE</code> error is generated and the line width is not changed.
+</p>
+
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<h2>References</h2>