Visual FoxPro 8.0 offers the ability to use custom pages in a Pageframe, custom command buttons inside of Command Groups, custom option buttons inside of Option Groups, use custom columns inside of a Grid, as well as using custom headers inside of columns. SubClassMember.pjx is a project that contains 3 different examples on how to use custom member classes in your applications. 1_SubClassMember_Page : This program will show how to use member classes for a Pageframe. This new features allows custom pages to be added to a Pageframe at design time and run time. 2_SubClassMember_Groups : This program will show how to use member classes for Command Groups and Option Groups. 3_SubClassMember_Grid : This program will show how to use member classes for grid columns and column headers. This new features allows custom columns and headers to be added to a Grid at run time.