-.PP
-To complete the current attack wave, you must destroy all the enemies. Hunt
-around, especially in the sky, if you can't find the last few.
-.br
-.SH OPTIONS
-.PP
-There are a plethora of options available for tweaking various aspects of the
-game. All options can be set either from a configuration file or by passing
-them as arguments. Some of the more common options can be set from within the
-game.
-.PP
-A
-.B yoink
-configuration file ("yoinkrc") consists of key-value pairs organized in a
-logical hierarchy. The format of the file is human-readable, so you can get in
-there with your favorite text editor if you like to work under the hood.
-.B yoink
-looks for configuration files and loads them in this order, with the options in
-prior configuration files taking precedence over the same options if they exist
-in multiple configuration files:
-.TP
-1. $YOINK_CONFIGFILE
-This is an optional environment variable.
-.TP
-2. $HOME/.yoinkrc
-This is a specific user's configuration file.
-.TP
-3. /etc/yoinkrc
-This is a system-wide configuration file.
-.TP
-4. @datadir@/yoinkrc
-This is the base configuration file which should be considered read-only. Look
-to this file as an example of the format used for configuration files.
-.PP
-Options that are passed as arguments take precedence over options loaded from
-the configuration file(s). This mechanism is good for running the game with a
-temporary setting which you do not intend to retain. Keep in mind that if you
-edit and save options in-game, any options you have passed as arguments during
-the invocation of the game will be saved to the $HOME/.yoinkrc configuration
-file. You may have to go into that file and remove any options you didn't
-intend to set. When passing options as arguments, you must use the fully
-qualified name of the option if it exists in a subgroup. For example:
-.PP
-.TP
-yoink video.fullscreen=true
-Set the option video.fullscreen to true. This will run the game in full-screen
-mode.
-.TP
-yoink video.maxfps=60
-Set the option video.maxfps to 60. This will cap the display rate at 60Hz.
-.PP
-You can also set options with array values. Arrays can be passed on the
-command line by surrounding all the parts with square brackets and separating
-each part by a comma. For example:
-.TP
-yoink video.mode=[1024,768]
-Set the option video.mode to an array with numbers 1024 and 768. The video size
-will be 1024x768.
-.PP
-Here is a list of some of the options available:
-.TP
-.B engine.timestep
-The amount of time in seconds between each update of the physics state. A value
-of 0.01 or lower is ideal for accurate physics approximations. Values that are
-much lower may introduce errors in the game.
-.TP
-.B input.grab
-Takes a boolean (true or false). If true, the cursor pointer will be "stuck"
-within the area of the window, and many key combinations which would otherwise
-be handled by the window manager will instead be dropped. This is a low-level
-option of limited usefulness.
-.TP
-.B video.colorbuffers
-This takes an array of four number values which represent the number of bits to
-use for red, green, blue, and the alpha channel. This is a low-level option of
-limited usefulness. The default value is almost always preferable.
-.TP
-.B video.cursor
-This option effects the visibility of the cursor while it is "hovering" over the
-window. If the value is true, the cursor will be visible. Otherwise, the
-cursor will be hidden.
-.TP
-.B video.doublebuffer
-If true, double-buffering will be used to render animations with minimal
-distortions. Otherwise, a single buffer will be used. The recommended value is
-true.
-.TP
-.B video.fullscreen
-If true, the window will capture the display and render the game in full screen
-splendor. A value of false means the game will run in a window.
-.TP
-.B video.maxfps
-The maximum number of frames to be drawn per second. A value of 50 is pretty
-good. If your computer is pretty old, can get away with decreasing this value
-and still have reasonably smooth animation. You can set this to a very high
-number to effectively render as many frames as is possible, but the actual rate
-could be limited by vertical display synchronization, depending on the X11
-driver and settings used. You should not set this option higher than the point
-where the vertical synchronization effectively limits the draw rate or else the
-game may not be able to update the physics on schedule which could actually
-significantly lower the quality of the animation.
-.TP
-.B video.mode
-The resolution or size of the window. The value is an array with three number
-elements representing the width, height, and bits per pixel that make up the
-video mode.. A typical value is [800,600,32] for a size of 800x600 pixels with
-millions of colors.
-.TP
-.B video.multisamplebuffers
-The number of multisample buffers used.
-.TP
-.B video.multisamplesamples
-The number of multisample samples used.
-.TP
-.B video.printfps
-If true, the current number of frames being draw per second will be printed to
-the console. This is usually off by default, but you can set this to true if
-you're interested in the draw rate you're actually getting.
-.TP
-.B video.resizable
-If true, the window will be resizable by the window manager. This option is
-meaningless if the game is drawing to the full screen.
-.TP
-.B video.swapcontrol
-If true, drawing will take place at a time which will minimize distortion caused
-by the vertical refreshing of displays. The recommended value is true.
-.br
-.SH ENVIRONMENT
-.PP
-.B yoink
-responds to some variables in the environment:
-.TP
-HOME
-If set to a path of a valid directory (presumably a user's home directory),
-.B yoink
-will load options from the configuration file at $HOME/.yoinkrc, if it exists.
-Saving options within the game will cause this file to be over-written with the
-new options.
-.TP
-USER
-.B yoink
-uses this variable to guess the user's nickname, for a high score entry or
-whatever.
-.TP
-YOINK_CONFIGFILE
-If set to a path of a valid configuration file,
-.B yoink
-will load the options from that file, and those options will take precedence
-over options loaded from other configuration files. Any in-game saving will
-cause this file to be over-written by the new options rather than the file at
-$HOME/.yoinkrc.
-.TP
-YOINK_DATADIR
-If set to a path of a valid directory,
-.B yoink