diff --git a/preserves-binary.md b/preserves-binary.md
index a2164e1..4f68b66 100644
--- a/preserves-binary.md
+++ b/preserves-binary.md
@@ -256,10 +256,10 @@ undetermined number of `Value`s across, say, a TCP/IP connection:
 
  - If the text syntax is to be used for the connection, simply start
    writing each `Document` one after the other. Documents for `Atom`s
-   *MUST* be separated from their neighbours by whitespace; in general,
-   whitespace *SHOULD* be used to separate adjacent documents.
-   Specifically, whitespace separating adjacent documents *SHOULD* be
-   ASCII newline (10).
+   are in general ambiguous if not separated from their neighbours by
+   whitespace; whitespace *SHOULD* be used to separate adjacent
+   documents. Specifically, whitespace separating adjacent documents
+   *SHOULD* be ASCII newline (10).
 
  - If the binary syntax is to be used for the connection, start the
    connection with byte `0xA8` (sequence). After the initial byte, send