Exception Error is raised when the operating system cannot compleat the requested operation, for example "Out of memory"
Exception raised when the requested operation cannon be currently completed by the operating system
Exception raised when information given or received does not match protocol
Parser raises Error if it is unable to parse the given string.
Exception raised when any font associated functions fail
Exception raised when a connection is lost.
Exception Quit is raised when the player has requested quit either by pressing Ctrl-C, trying to close the window, or by non-fatal signal
Exception raised when the message is too short for the reader to read it's value
Exception raised when the given keyname is not known