Substring()

Extracts a portion of a string.

sub_string = Substring(string input_string, integer start, integer length)

Argument	Contents
input_string	Any string
start	An integer indicating the beginning of the substring
length	An integer indicating the length of the substring

The portion of input_string starting at character start and extending length characters.

If start is null, returns a portion of input_string starting at the first character.
If length is null, returns a portion of input_string extending to the last character.

str = Substring("This is the GISDK Manual", 7, 8) // str = "s the GI"

Function	Summary
Left()	Returns the leftmost n characters of a string
Right()	Returns the rightmost n characters of a string
Position()	Returns the position of a substring within a string
PositionFrom()	Search for the first occurrence of a substring within a string, starting the search at a designated position
PositionTo()	Search for the last occurrence of a substring within a string, ending the search at a designated position
StringLength()	Returns the length of a string
SubstituteChars()	Returns the input string with all occurrences of the characters listed in the find string replaced with the characters in the replacement string