; cPanel %cpversion%
; Zone file for %domain%
$TTL %ttl%
@ %nsttl% IN SOA %nameserver%. %rpemail%. (
%serial% ; serial, todays date+todays
86400 ; refresh, seconds
7200 ; retry, seconds
3600000 ; expire, seconds
86400 ) ; minimum, seconds

%domain%. %nsttl% IN NS %nameserver%.
%domain%. %nsttl% IN NS %nameserver2%.
%domain%. %nsttl% IN NS %nameserver3%.
%domain%. %nsttl% IN NS %nameserver4%.

%nameserverentry%. IN A %nameservera%
%nameserverentry2%. IN A %nameservera2%
%nameserverentry3%. IN A %nameservera3%
%nameserverentry4%. IN A %nameservera4%

%domain%. IN A %ip%

localhost.%domain%. IN A 127.0.0.1

%domain%. IN MX 0 %domain%.

mail IN CNAME %domain%.
www IN CNAME %domain%.
ftp IN CNAME %domain%.

Where do the values for these variables come from?
%ttl%
%cpversion%
%nsttl%
%rpemail%
%serial%
%domain%
%nameserverentry%
%nameservera%
%nameserverentry2%
%nameservera2%
%nameserverentry3%
%nameservera3%
%nameserverentry4%
%nameservera4%
%ip%
...and are there any more that might be useful?