diff --git a/docs/lang/assembly6809.md b/docs/lang/assembly6809.md
index 78108e45..6da6d449 100644
--- a/docs/lang/assembly6809.md
+++ b/docs/lang/assembly6809.md
@@ -42,6 +42,11 @@ but you need to be careful with using absolute vs immediate addressing:
         }
         return result
     }
+    
+To use the direct addressing mode, prepend the argument with `<`:
+
+    CLR <$6f  // clears the byte $6f in the direct page
+    CLR $6f   // clears the byte $006f (absolute address!)
 
 Any assembly opcode can be prefixed with `?`, which allows the optimizer change it or elide it if needed.
 Opcodes without that prefix will be always compiled as written.
diff --git a/docs/various/asmdiff.md b/docs/various/asmdiff.md
index e3efc369..82e9751a 100644
--- a/docs/various/asmdiff.md
+++ b/docs/various/asmdiff.md
@@ -30,5 +30,7 @@ Colons are required in label declarations.
 
 * 6809: `0,X` is assembled the same as `,X`.
 
+* 6502: To enforce direct-page addressing, prepend the argument with `<`: `<arg`.
+