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-rw-r--r--doc/apps/dgst.pod4
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diff --git a/doc/apps/dgst.pod b/doc/apps/dgst.pod
index 96d3cc0f75..1b1a7e17fd 100644
--- a/doc/apps/dgst.pod
+++ b/doc/apps/dgst.pod
@@ -185,6 +185,10 @@ To verify a signature:
=head1 NOTES
+The digest mechanisms that are available will depend on the options
+used when building OpenSSL.
+The B<list digest-commands> command can be used to list them.
+
New or agile applications should use probably use SHA-256. Other digests,
particularly SHA-1 and MD5, are still widely used for interoperating
with existing formats and protocols.