The sword mechanics are everything in this game. Your sword rotates away from the direction your ship moves, and in doing so slices through the various enemies.

Kerberos is a system for authenticating users and services on a network. Kerberos is a trusted third-party service. That means that there is a third party (the Kerberos server) that is trusted by all the entities on the network (users and services, usually called "principals").

libcurl is an easy-to-use client-side URL transfer library, supporting DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET and TFTP.

Doxygen is a documentation system for C++, C, Objective-C, C#, PHP, Java, Python, IDL, Fortran, VHDL and to some extent D. It can generate an on-line documentation browser (in HTML) and/or an off-line reference manual (in LaTeX) from a set of annotated source files.

Dalvik Debug Monitor is a tool for debugging Android applications. Among others, it provides these capabilities:

This package provides the man command, the primary way of examining the system help files (manual pages). Other utilities provided include the whatis and apropos commands for searching the manual page database, the manpath utility for determining the manual page search path, and the maintenance utilities mandb, catman and zsoelim. man-db uses the groff suite of programs to format and display the manual pages.