Format of TopView field table entry:
Offset	Size	Description	)
 00h	BYTE	start row    \
 01h	BYTE	start column  \ if menu selection and start is to
 02h	BYTE	end row	      / right or below end, select from kbd only
 03h	BYTE	end column   /
 04h	BYTE	field type (see #00445)
 05h	BYTE	modifier
		if type is fill-in, then bit flags to determine behavior
		  bit 7	 automatically enter CR when field full
		  bit 6	 move to next field when current field is full
		  bit 5	 enter text from right end (for numbers)
		  bit 4	 force input to uppercase
		  bit 3	 clear old contents on first keystroke
		  bit 2	 input returned when cursor moves out of
			  modified field ("validate", API level 2.02+)
		  bit 1	 reserved
		  bit 0	 reserved
		if select field, first key to press to activate
		  00h if have to point-&-click or is an extended-ASCII
		      keystroke (only if two-key menus enabled)
 06h	BYTE	(select field only) normal color of field
 07h	BYTE	second key for select field.  This byte is present iff
		  two-letter menu entries selected with opcode E5h, and in that
		  case is present regardless of field type
SeeAlso: #00442