Example: confidence
SUGI 25: The SAS SUBSTR Function - A Beginner's Tutorial
function is supposed to read 2 characters,beginning in position 7. Since that 2-character read from position 7 will attempttostartthe pointer past the length of SOURCEVAR1,theSUBSTRfunction cannot work properly. The result of this type of incorrect usage is a NOTE:in the SAS log.
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