Issue #28496: Mark up constants 0, 1 and -1 that denote return values or
special input values as literal text.
diff --git a/Doc/c-api/arg.rst b/Doc/c-api/arg.rst
index 71e1fa3..7375683 100644
--- a/Doc/c-api/arg.rst
+++ b/Doc/c-api/arg.rst
@@ -425,7 +425,7 @@
only if its format string contains two or more format units. If the format
string is empty, it returns ``None``; if it contains exactly one format
unit, it returns whatever object is described by that format unit. To
- force it to return a tuple of size 0 or one, parenthesize the format
+ force it to return a tuple of size ``0`` or one, parenthesize the format
string.
When memory buffers are passed as parameters to supply data to build