diff --git a/api/README-TOKENIZER.md b/api/README-TOKENIZER.md
index 0416a34..f478929 100644
--- a/api/README-TOKENIZER.md
+++ b/api/README-TOKENIZER.md
@@ -35,6 +35,8 @@ The framework allows embedding of directives.
 
 ### `$embed`
 
+> NOTE: It appears that DOS 3.3 _rewrites_ the resulting application and messes up the linked list of lines. ProDOS does not.
+
 `$embed` will allow a binary to be embedded within the resulting application and can move it to a destination in memory. Please note that once the application is loaded on the Apple II, the program cannot be altered as the computer will crash.  
 
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