to a character
     type (*note Negative Type Numbers::).  I'm not sure how this
     differs from an array.  This appears to be a Fortran feature.
     LENGTH is a bound, like those in range types; see *note
     Subranges::.

'S TYPE-INFORMATION'
     Pascal set type.  TYPE-INFORMATION must be a small type such as an
     enumeration or a subrange, and the type is a bitmask whose length
     is specified by the number of elements in TYPE-INFORMATION.

     In CHILL, if it is a bitstring instead of a set, also use the 'S'
     type attribute (*note String Field::).

'* TYPE-INFORMATION'
     Pointer to TYPE-INFORMATION.