diff --git a/knowledge-base/moneropedia/paymentid.md b/knowledge-base/moneropedia/paymentid.md
index c50a35bd..a21ab6c2 100644
--- a/knowledge-base/moneropedia/paymentid.md
+++ b/knowledge-base/moneropedia/paymentid.md
@@ -7,4 +7,11 @@ summary: "an optional flag that is added to identify transactions to merchants,
 
 ### The Basics
 
-{{ page.summary | capitalize }}.
\ No newline at end of file
+Payment ID is an **arbitrary** and **optional** transaction attachment that consists of 32 bytes (64 hexadecimal characters).
+
+It is usually used to identify transactions to merchants and exchanges: Given the intrinsic privacy features built into Monero, where a single public address is usually used for incoming transactions, the Payment ID is especially useful to tie incoming payments with user accounts.
+
+### Creating a Payment ID
+One can create a Payment ID quickly from the command line using OpenSSL:
+
+```# openssl rand 32 -hex```