The Convert Unsigned Integer to Octal Text routine converts an
    unsigned integer to an octal ASCII text string. OTS$CVT_L_TO
    supports Fortran Ow and Ow.m output conversion formats.

    Format

      OTS$CVT_L_TO  varying-input-value

                    ,fixed-length-resultant-string

                    [,number-of-digits] [,input-value-size]