Zerofree finds the unallocated blocks with non-zero value content in an ext2, ext3 or ext4 file-system and fills them with zeroes (zerofree can also work with another value than zero). This is mostly useful if the device on which this file-system resides is a disk image. In this case, depending on the type of disk image, a secondary utility may be able to reduce the size of the disk image after zerofree has been run. Zerofree requires the file-system to be unmounted or mounted read-only.

TiMidity++ is a very high quality software-only MIDI sequencer and MOD player.

This package contains the interpreter and some essential modules. It can be used in the boot process for some basic tasks. See /usr/share/doc/python2.7-minimal/README.Debian for a list of the modules contained in this package.

Steam (http://www.steampowered.com) is a software content delivery system developed by Valve software (http://www.valvesoftware.com). There is some free software available, but for the most part the content delivered is non-free.

This package ensures that no remnants of the non-free NVIDIA graphics drivers that were installed with the nvidia-installer remain on the system. Such an installation conflicts with the packaged drivers.

Chkconfig is a utility to update and query runlevel information for system services. Chkconfig manipulates the numerous symbolic links in /etc/init.d/, to relieve system administrators of some of the drudgery of manually editing the symbolic links.