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@@ -3,6 +3,7 @@ SPDX-FileCopyrightText: 2023 The "Notes on OpenPGP" project
 SPDX-License-Identifier: CC-BY-SA-4.0
 -->
 
+(zoom_certificates)=
 # Zooming in: Packet structure of certificates and keys
 
 Now that we've established these concepts, and the components that OpenPGP certificates consist of, let's look at the internal details of an example certificate.