A little bit more explanation of what "context" means here.
diff --git a/OpenSSL/crypto.py b/OpenSSL/crypto.py
index fbccb6d..b6951c0 100644
--- a/OpenSSL/crypto.py
+++ b/OpenSSL/crypto.py
@@ -1392,10 +1392,12 @@
"""
An X.509 store context.
- An :py:class:`X509StoreContext` is used to verify a certificate in some
- context in conjunction with :py:func:`verify_cert`. The information
- encapsulated in this object includes, but is not limited to, a set of
- trusted certificates, verification parameters and revoked certificates.
+ An :py:class:`X509StoreContext` is used to define some of the criteria for
+ certificate verification. The information encapsulated in this object
+ includes, but is not limited to, a set of trusted certificates,
+ verification parameters, and revoked certificates.
+
+ Of these, only the set of trusted certificates is currently exposed.
:ivar _store_ctx: The underlying X509_STORE_CTX structure used by this
instance. It is dynamically allocated and automatically garbage