AlphaWindows - Protocol Information?

In the 1990s a computer terminal standard "AlphaWindows" was proposed by the Display Industry Association (DIA). Sort of X-Windows for the poor. A few terminals appeared which supported multiple text windows following the this standard. Some limited global facts can be found in Wikipedia. I learned that for example the TeleVideo 995 and 9089 or the HP 700/70 terminals supported AlphaWindows. Obviously there were several implementation levels like: (1) Basic AlphaWindow (2) Mouse Operations (3) Decorations (4) AlphaWindow Credits Flow Control Unfortunately I cannot find any information on the protocol resp. escape sequences and the DIA is long gone. Does anyone have a manual with escape sequences for one of the terminals mentioned? Or other material describing this protocol? Note that other terminals of the similar types (e.g. HP 700/71) do not support this feature. Martin