reference for zfs on freebsd stable/12 and stable/13 and main/14

[tech-lists]

Hi,

I know from reading around the lists that zfs is changing to OpenZFS.
What I'd like to know is, is there *recent* literature (website or pdf) 
available for reference for zfs backup/incremental backup with zfs 
send to a remote system in the following situations:

1. 12.2-p4 system sending to recent stable/12 system
2. 12.2-p4 ststem sending to recent stable/13 system

I realise some of this is in the handbook but the handbook is
out-of-date in many areas and references versions (of freebsd) that are 
no longer supported. 

thanks,
-- 
J.
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