About Disabled Report Frame Control Tool in Form Designing.

While designing a Form in the Navision,

in the ToolsBox,

there is a Control Called Report Frame. But it is disabled in my ToolsBox. I am unable to use it.

Why this Control is disabled and what can I do for using this?

There is another tool which is also disabled.-ListBox.

Please anyone suggest me on this.

These controls exist since I was starting with NAV more than 10 years ago.

Apparently these controls where reserved for future use.