Deep Structures in the Dictionary

I have create a local type in my program as follows:

TYPES: BEGIN OF ty_local_type.
         INCLUDE some_structure.
TYPES:   tline TYPE tline OCCURS 0,
       END OF ty_local_type.

It works fine, however I need the type to also be available in a smartform so I need to create it in the dictionary (SE11) instead.

Can anyone describe how to include a <b>table</b> (specifically "tline") into a structure in the dictionary?