+Arguments
+=========
+
+Runtime
+-------
+
+-n <n>
+ terminate after <n> frames
+
+-t <t>
+ terminate after <t> milliseconds
+
+if both n and t are given, terminate after n frames and
+assume <t> milliseconds pass each frame
+
+--asset-path <path>
+ load assets from given path
+ default is application dir + "assets"
+
+--save-path <path>
+ store and load saves at given path
+ default is whatever SDL thinks is good
+ (should be ~/.local/share/localhorst/blank/)
+
+Application
+-----------
+
+-d
+ disable double buffering
+
+-m <num>
+ set sample size to <num> (samples per pixel)
+
+--no-vsync
+ disable vsync
+
+--standalone
+ run as standalone (the default)
+
+--client
+ run as client
+
+--server
+ run as server
+
+Interface
+---------
+
+--no-keyboard
+ disable keyboard input handling
+
+--no-mouse
+ disable mouse input handling
+
+--no-hud
+ disable HUD drawing (includes the selected block outline)
+
+--no-audio
+ disable audio
+ the audio device and sounds will still be allocated
+ it just stops the interface from queueing buffers
+
+Network
+-------
+
+--host <hostname>
+ hostname to connect to in client mode
+
+--port <number>
+ port number to connection to (client) or listen on (server)
+
+--player-name <name>
+ use given name to identify with the server (client mode)
+ default player name is "default"
+ the server will reject players with names that are already taken
+
+World
+-----
+
+-s <seed>
+ use <seed> (unsigned integer) as the world seed
+ only used for newly created worlds
+ default is 0
+
+--world-name <name>
+ use given name for the world save
+ no checks are being done right now, so make sure it can be
+ used as a directory name
+
+
+Controls
+========
+
+Move around with WSAD, shift, and space, look around with mouse motion.
+Mouse button 1 deletes the block you're pointing at, button 2 selects it
+as the active block, and button 3 places the active block next to the one
+you're pointing at.
+
+As an alternative to picking, you can also use the mousewheel up/down to
+flip through available blocks.
+
+Q changes the face of the active block (loops over up, down, right, left,
+front, and back) and E changes the turn (none, left, around, and right).
+
+Press N to toggle player/world collision.
+
+F1 toggles UI rendering.
+F3 toggles a display telling how long on average it takes to compute a frame.
+F4 toggles audio.
+
+Controls are interpreted by scancode, meaning you don't have to break your
+fingers when you're on an AZERTY. WSAD will be ZSQD there and the above
+description is just wrong.
+
+Also I've added a plethora of alternate keys that can be used, like arrow
+keys for movement, ins/del for placing/removing blocks, etc.