+<pre>\r
+Usage: ./presencevnc [options] [URL [quality]]\r
+\r
+Options:\r
+ --help Print this text and exit.\r
+ --listen [port] Listen for incoming connections on given port, or 5500 if omitted. Cannot be used with an URL.\r
+ --viewonly Don't send mouse/keyboard input to remote desktop. This is only useful if you also supply a URL, or --listen.\r
+\r
+URLs:\r
+ vnc://:password@server:display\r
+\r
+ Password and display can be omitted, e.g. vnc://server is a valid URL.\r
+ Optionally, you can define the quality as a second argument (1-3, where 1 is the best). Default is 2.\r
+</pre>\r