matplotlib
diff --git a/‎tutorials/intermediate/legend_guide.py
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+3Lines changed: 3 additions & 0 deletions b/‎tutorials/intermediate/legend_guide.py
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+3Lines changed: 3 additions & 0 deletions
@@ -46,6 +46,9 @@
 not all artists can be added to a legend, at which point a "proxy" will have
 to be created (see :ref:`proxy_legend_handles` for further details).
 
+Those artists with an empty string as label or with a label starting with
+"_" will be ignored.
+
 For full control of what is being added to the legend, it is common to pass
 the appropriate handles directly to :func:`legend`::