When converting a database to 4D 2004 from a previous version, the platform property displays extra options as opposed to a fresh database created in 2004. Below is a list of the extra platforms settings:

-Inherited from Form
-Automatic
-Mac OS 7
-Windows 3.11
-NT 3.51
-Windows 95/98/2000
-NT4
-Mac OS 9
-Mac Theme

These options correspond to the former mode of platform interface support in 4th Dimension and its is no longer advisable to use them.