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-rw-r--r--Doc/c-api/arg.rst7
1 files changed, 4 insertions, 3 deletions
diff --git a/Doc/c-api/arg.rst b/Doc/c-api/arg.rst
index a32dd09..d4dda7c 100644
--- a/Doc/c-api/arg.rst
+++ b/Doc/c-api/arg.rst
@@ -30,9 +30,10 @@ variable(s) whose address should be passed.
Strings and buffers
-------------------
-These formats do not expect you to provide raw storage for the returned string
-or bytes. Also, you won't have to release any memory yourself, except with
-the ``es``, ``es#``, ``et`` and ``et#`` formats.
+These formats allow to access an object as a contiguous chunk of memory.
+You don't have to provide raw storage for the returned unicode or bytes
+area. Also, you won't have to release any memory yourself, except with the
+``es``, ``es#``, ``et`` and ``et#`` formats.
However, when a :c:type:`Py_buffer` structure gets filled, the underlying
buffer is locked so that the caller can subsequently use the buffer even