Add overset/underset whatsnew entry

aitikgupta · aitikgupta · commit 9649d8365560 · 2021-02-11T14:35:58.000+05:30
diff --git a/doc/users/next_whats_new/mathtext.rst b/doc/users/next_whats_new/mathtext.rst
@@ -0,0 +1,14 @@
+``matplotlib.mathtext`` now supports *overset* and *underset* LaTeX symbols
+---------------------------------------------------------------------------
+
+`.mathtext`, the default TeX layout engine which is shipped along with
+Matplotlib now supports symbols like *overset* and *underset*.
+
+The structure which should be followed: "\overset{body}{annotation}" or
+"\underset{body}{annotation}", where *body* would be the text "above" or
+"below" the *annotation* - the baseline character.
+
+.. plot::
+
+    math_expr = r"$ x \overset{f}{\rightarrow} y \underset{f}{\leftarrow} z $"
+    plt.text(0.4, 0.5, math_expr, usetex=False)
