Nonvirtual member functions

• void on(int) - set the object to be on or off.
• int on(void) - return the current on/off status.
• output_level(int) - set the current output level.
• int output_level(void) - return current output level of the Inform object.
• msg_level(int) - set the current level of the next message to be printed.
• int msg_level(void) - return the current message output level.
• void need_newline(int) - set the current flag for whether a newline is needed or not.
• int need_newline(void) - return current newline print status.
• void destination(ostream *) - give the provided destination stream to the Inform object as a place where to print messages.
• ostream *destination(void) - return destination to where messages will be printed.
• send(void) - prints the contents of the current message buffer to the destination stream, if necessary.
• operator<<(various types) - overloaded insertion operators which are used to put data into the current message buffer. These are used just like regular stream insertion operators, and when the message is complete, either the routine send should be called, or else the sendmsg manipulator should be inserted into the stream. Newline characters may be put in the stream, Inform will print out each newline-separated line with the proper prefix.