datatypes.txt

	data_type	    data_type_ext    constraints	description
	---------	    -------------    -----------    -----------
1	short text	    size             1-255          standard text input
2	long text       size             1,2,3          textarea, 1=25x5, 2=50x10, 3=75x25
3	autonumber                                      read-only integer, generated by the system
4	number		    decimal places   0-6            numeric text input with specified decimal places (default 0)
5	money		    decimal places   0-6            money text input with specified decimal places (default 2)
6	percent		    decimal places   0-6            percent text input with specified decimal places (default 0)
7	date                                            date text input
9   date/time                                       date/time text input
10  boolean                                         rendered as checkbox
11  user                                            drop down list of users
12	email                                           rendered as link
13  url                                             rendered as link (opens in new window)
14	option list	    list id                         drop down list with predefined options
15  file (blob)                                     list/view: download link w/icon; edit: file upload element
16	object		    object id                       single object selection (list/view: link to jump to object; edit: link w/ popup window for selection)