To allow numeric entry, you must use uppershift for
the data-entry keyboard and lowershift for the typewriter-like keyboard. All
characters are valid for entry.
The display length for a numeric shift field is one more than the length
coded in positions 30 through 34 when the following conditions occur:
- The field is an un-edited, input-capable field.
- The value in the decimal positions field is greater than zero.
The extra position in the display length is for the decimal point.
Note: Numeric-shift fields with specified decimal positions (in
positions 36 and 37) are processed as numeric-only fields by data management
during input, except that editing is not supported.