Recommendations
To change the layout of domain data files on motcig name server.
Restrict access to motcig name server.
Modify boot file by few people only.
Use Make command (perl script) to maintain BIND.
To modify any forward or reverse file, I recommend to make a copy of the original file to that date, and then edit the files.
To Modify the format of Serial # in the SOA record to yyyymmddrr (The recommended format is valid for up to 99 revisions a day versus the current use of hour format).