0.9b (c) 1995 Peter Childs
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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