There is now a list of the abbreviations used in ADA. You can find it here
The manuscript Sanskrit-Yasna S1 has been digitized and is now published in ADA indexed by Leon Goldman.
The manuscript Ave1001, one of oldest Iranian Videvdad Sade manuscripts, has been digitized by ADA through the kindness of Kurosh Niknam. The manuscript will be published soon in ADA by Saloume Gholami