dbtype mfilenamedbtype mfilename start:end
dbtype mfilename displays the contents of the specified M-file function with line numbers preceding each line.
dbtype mfilename start:end displays the portion of the file specified by a range of line numbers.
dbclear,dbcont,dbdown,dbstack,dbstatus,dbstep,dbstop,dbup
(c) Copyright 1994 by The MathWorks, Inc.