Add note about webgl glyph fallback to canvas
@@ -710,4 +710,8 @@ class Plot(LayoutDOM):
output_backend = Enum(OutputBackend, default="canvas", help="""
Specify the output backend for the plot area. Default is HTML5 Canvas.
+
+ .. note::
+ When set to ``webgl``, glyphs without a WebGL rendering implementation
+ will fall back to rendering onto 2D canvas.
""")
