integer,intent(in),optional   :: end
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DESCRIPTION</h2>
<p>Globally substitute one substring for another in string.</p>
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OPTIONS</h2>
<p>TARGETLINE input line to be changed. Must be long enough to hold altered output. OLD substring to find and replace NEW replacement for OLD substring IERR error code. If IER = -1 bad directive, &gt;= 0 then count of changes made. START sets the left margin to be scanned for OLD in TA