SUBSTR( )

The value of any REXX variable can be a string of characters. To select a part of a string, you can use the SUBSTR( ) function. SUBSTR is an abbreviation for substring. The first three arguments are:

o

The string from which a part is taken.
o
The position of the first character that is to be contained in the result (characters are numbered 1,2,3...in the string).
o
The length of the result.
For example:

S = 'reveal'SAY substr(S,2,3) /* Says 'eve'. Beginning with the second  */
                  /*  character, takes three characters.    */
SAY substr(S,3,4) /* Says 'veal'. Beginning with the third  */
                  /*  character, takes four characters.     */

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