5.5.1.2 Message: description

In Return Value, replace:

<readable>

with:

<readableString>

5.5.3.1 Message: messageText: signalerText

In Definition, correct spelling:

Subseqent -> Subsequent

1. messgeText -> #messageText (2 occurances)

5.5.18 Protocol: <MessageNotUnderstood>

In Messages, remove the duplicate #message and the associated section 5.5.18.1