[RTTY] SPDX RTTY and WF1B Format?

[Eric - VE3GSI]

Hi Gang,
I was just double checking my station and the rules for the SPDX RTTY
contest. In the rules for log submission it reads '..... we prefer WF1B
format.'
 
Since there is not suppose to be any called a dumb question, I'll ask. Is
the WF1B format the same as the ADIF format?
 
I did surf the contest.com archives and found that the SP Sponsors do not
accept Cabrillo format, so I just want to be sure what is the correct way
for submitting a log to our hosts.
 
To everyone in the SP 'test GL
de Eric - VE3GSI
ve3gsi at arrl.net