diff --git a/book/source/07-signing_components.md b/book/source/07-signing_components.md
index 258829a..c31eda4 100644
--- a/book/source/07-signing_components.md
+++ b/book/source/07-signing_components.md
@@ -21,7 +21,7 @@ There are two important scenarios to distinguish. Signatures on components can b
 
 ## Context-specific meaning
 
-For some signature types, the meaning of a signature depends in part on who issued it: A self-signature has a different meaning from a signature issued by a third party.
+The meaning of a signature depends in part on who issued it. A self-signature has a different meaning from a signature issued by a third party.
 
 For example:
 
@@ -145,6 +145,8 @@ This signature is calculated over the primary key and User ID.
 ### Direct key signature: Adding metadata to the primary key
 
 ```{admonition} TODO
+:class: warning
+
 explain metadata associated with this signature, and that c-r prefers this over primary user id.
 ```