I reassembled and commented this listing on my 130 XE uisng Mac/65 and a XEP-80. 
It took a lot of time! Those books provided help:
Data Becker, 600XL / 800XL INTERN and Sybex, Das Atari Profibuch.


The file is provided as an archive. It contains Mac/65 files in tokenized form. 
Hence you can only read or use it running Mac/65. To start things please run VOR.M65.