Steve,

Are you sure?

Let's say I have code in a procedure file:

FUNCTION DEFINECOLUMNCLASS()

DEFINE CLASS myColumn AS column

RETURN

Now I add the class to my grid.

SET PROCEDURE TO DEFINEFUNCTIONS ADDITIVE
DO DEFINECOLUMNCLASS

this.AddObject( "newcolumn","myColumn" )

RETURN

How does Fox know that there is a defined class called "myColumn"?

Something is in memory that either contains the class definition or points to the function that created the class definition that Fox recognizes as myColumn.

How do I find out if that something exists?

Regards,