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theory/gist:3504299

Created August 28, 2012 20:57
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=item C<< <change>^ >>, e.g., C<HEAD^^>, C<users_table^3>, C<@beta^2>
A suffix C<^> to a symbolic or actual name means the change I<prior> to that
change. Multiple C<^>s indicate multiple prior changes. These can also be
written as C<< ^<n> >>, where C<< <n> >> represents the number of changes to
go back.
=item C<< <change>~ >>, e.g., C<ROOT~>, C<foo~~>, C<@bar~4>
A suffix C<~> to a symbolic or actual name that means the change I<after> that
change. Multiple C<~>s indicate multiple prior changes. These can also be
written as C<< ~<n> >>, where C<< <n> >> represents the number of changes to
go forward.
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