Where can i find the properties of OLE2 object?

I'm programming with OLE2 objects.

with the help of the sample code and the help of sap help document, I got to use the

OLE interface.

But where can i find the properties of the OLE2 objects?

for example, I can get a table from a document, or get a table cell from a table. How do i know a table object has a property that is a table cell, and named 'CELL'?

Where can I find a list of all the properties with the OLE2 objects?