This type of field stores numeric information.
Example of a Number field type:
- Auto-numbering - when adding a new entry a value is automatically suggested that is equal to the maximum at that moment, +1
- No duplication - you can't save a directory entry if there already exists a field with the same value in the directory
- Split into groups of digits - lets you split numbers into groups of digits
- Number of decimal places - lets you specify how many characters to display after the delimiter.