Table of user functions and global variables

Name	Kind	Type	Size	Description	Arguments	Description; Type and Size of Arguments
getopt()	Function	Character	1	Returns short option character	1 or 2	1.) Short options string: character(80) 2.) Attributes on long options: derived type array “option_s” (optional)
option_s	Array	Derived Type	1-dimensional (:)	Contains the 3 attributes of an long option	3	1.) Long name of an option: character(80) 2.) Specication if an option has an argument: logical 3.) Short name of an option: character(1)
optarg	Variable	Character	80	Contains the optional value of an option	n/a	n/a

Utillity function

Name	Kind	Type	Size	Description	Arguments	Description; Type and Size of Arguments
isnum	Function	Integer	1	Checks for numbers in "optarg" ismum=0 => non-numeric isnum=1 => integer isnum>1 => real/double	1	1.) Argument string, e.g. "optarg": character(len=*)