The following @functions locate and extract substrings:

Function	Description
@Begins(string ; sub)	Determines whether a string begins with a substring.
@Contains(string ; sub)	Determines whether a string contains a substring.
@Contains(string; list)	Determines whether a string contains any substring in a list.
@Ends(string ; sub)	Determines whether a string ends with a substring.
@FileDir(pathname)	Extracts the directory part of a file path name.
@Left(string ; n)	Extracts the leftmost n characters from a string.
@Left(string ; sub)	Extracts the leftmost characters from a string up to a substring, searching left to right.
@LeftBack (string ; n)	Extracts the leftmost characters from a string up to the nth character from the right.
@LeftBack(string ; sub)	Extracts the leftmost characters from a string up to a substring, searching right to left.
@Middle(string ; off ; n)	Extracts n characters from a string starting at an offset, searching left to right.
@Middle(string ; sub ; n)	Extracts n characters from a string starting at a substring, searching left to right.
@Middle(string ; off ; sub)	Extracts characters from a string starting at an offset and stopping at a substring, searching left to right.
@Middle(string ; sub ; sub)	Extracts characters from a string starting and stopping at substrings, searching left to right.
@MiddleBack(str ; off ; n)	Extracts n characters from a string starting at an offset, searching right to left.
@MiddleBack(str ; sub ; n)	Extracts n characters from a string starting at a substring, searching right to left.
@MiddleBack(str ; off ; sub)	Extracts characters from a string starting at an offset and stopping at a substring, searching right to left.
@MiddleBack(str ; sub ; sub)	Extracts characters from a string starting and stopping at substrings, searching right to left.
@ReplaceSubstring(source ; from ; to)	Replaces "from" with "to" in source. If "from" and "to" are lists, replaces corresponding entries in order.
@Right(string ; n)	Extracts the rightmost n characters from a string.
@Right(string ; sub)	Extracts the rightmost characters from a string up to a substring, searching left to right.
@RightBack(string ; n)	Extracts the rightmost characters from a string up to the nth character from the left.
@RightBack(string ; sub)	Extracts the rightmost characters from a string up to a substring, searching right to left.
@Word(string ; sep ; n)	Extracts word n from a string where words are the text between specified separators.
@Word(list ; sep ; n)	Extracts word n from each string in a list where words are the text between specified separators.

Example
See Also

Performing string operations

Glossary