The typographic conventions used in this documentation are
      largely based on those used in the Python documentation.
      They are summarized below.
    
    
      -  dir/file
      
-  Filenames are presented in an italic font.
	
       
-  -b, --option=value
-  Program options are in a bold face.  Variable parameters to
	an option are presented in italics.
	
       
-  Button
      
-  The labels on buttons or other GUI controls (widgets) are
	bold.
	
       
-  pluginlib
      
-  Module and interface names are bold.
	
       
-  SuitcaseFilesystem
      
-  Python class names are bold.
	
       
-  RuntimeError
      
-  Exception names are in bold type.
	
       
-  function(arg1 [,
	arg2 ] ) -> return type
      
-  Function names are presented in bold and arguments are in
	italics.  Optional arguments are surrounded by brackets.  If
	the function returns a value other than None, it will
	be specified following an arrow after the parameter list.
	
	
       
-  ASYNCHRONOUS method()
      
-  Method names, like function names, are presented in bold.
	If a method may be invoked remotely in an asynchronous manner,
	the word ASYNCHRONOUS will appear before the method
	name in the description in italics.
	
       
-  expression
-  Expressions which need to be typed are placed in a
	monospaced font.