I started with http://monotone.ca/monotone.html#Concepts http://monotone.ca/monotone.html#Concepts . Git and Mercurial took the same basic history structure and

I started with http://monotone.ca/monotone.html#Concepts http://monotone.ca/monotone.html#Concepts . Git and Mercurial took the same basic history structure and offer roughly the same abilities, but don't make such extensive use of certificates and have slightly different concepts of what a "branch" actually is and how branches relate to repositories and working copies.