diff --git a/book/source/06-certifications.md b/book/source/06-certifications.md
index e030270..ee25958 100644
--- a/book/source/06-certifications.md
+++ b/book/source/06-certifications.md
@@ -33,16 +33,6 @@ Note, though, that there are some cases where third parties legitimately add "un
 
 [^flooding]: Storing third-party identity certifications in the target OpenPGP certificate is convenient for consumers: it is easy to find all relevant certifications in one central location. However, when third parties can unilaterally add certifications, this opens an avenue for denial-of-service attacks by flooding. The SKS network of OpenPGP key servers [allowed and experienced this problem](https://dkg.fifthhorseman.net/blog/openpgp-certificate-flooding.html).
 
-
-```{admonition}
-:class: warning
-
-  - Purpose of a signature
-  - Meaning of different signature types, nuances of subpackets
-  - Can we have a "catalogue" of statements a user might want to make, mapping these to archetypical signatures?
-  - Revocation; Hard vs. Soft
-```
-
 ## Terminology
 
 ```{include} mermaid/06-terminology.md