diff --git a/book/source/signing_data.md b/book/source/signing_data.md
index b9a43fb..c505dc6 100644
--- a/book/source/signing_data.md
+++ b/book/source/signing_data.md
@@ -71,6 +71,12 @@ A {term}`one-pass-signed<One-pass-signed Message>` {term}`OpenPGP message` consi
 
 3. **{term}`Data signature packets<OpenPGP Signature Packet>`**: These contain the {term}`cryptographic signature` corresponding to the original data.
 
+```{note}
+Despite its name, a {term}`one-pass signature packet` is not a type of {term}`signature packet<OpenPGP Signature Packet>`.
+
+Instead, it's a type of auxiliary packet that can be used in conjunction with {term}`signature packets<OpenPGP Signature Packet>`. Its use allows storing the {term}`signature packets<OpenPGP Signature Packet>` after the message body. 
+```
+
 ##### Creation
 
 To produce an {term}`inline signature`, the {term}`signer` processes the entirety of the data by reading from an input file and writing into an output {term}`OpenPGP message` file. As the data is processed, the {term}`signer` simultaneously calculates a {term}`cryptographic signature`. This procedure results in the appending of a {term}`data signature packet` to the output {term}`OpenPGP message` file, where it can be efficiently stored.