debdelta - 0.67 main

debdelta is a program suite designed to compute changes between
Debian packages. These changes (deltas) are similar to the output of the
"diff" program in that they may be used to store and transmit only the
changes between Debian packages.
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This suite contains 'debdelta-upgrade', that downloads deltas and use them
to create all Debian packages needed for an 'apt-get upgrade'.
It may be used in a Debian/unstable host (to speed up download of new
packages), or in a Debian/stable host (for security updates).
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Similarly, when this package is installed, the 'cupt' package manager will
use deltas to upgrade the host.