CAD File Converter 3.0
All program functions are activated via the following dialog window:

Windows

Mac Os X
Here's what the various buttons and menus are for:
Add: this allows you to add a document in DWG, DXF, DWF and DXB format to the list of elements for conversion. The document appears in the list above.
Add folder: allows you to choose a folder. All the documents in the folder with DWG, DXF, DWF or DXB extension are added to the list of elements for conversion and appear in the list above.
Remove: all elements selected from the list are removed.
Remove all: all elements in the list are removed.
Choose folder: this lets you choose the folder where elements in the box above will be converted.
Type: for choosing the type of documents converted (DWG, DXF, DXB, DWF and PDF)
Version: used to select version for converted documents. The menu changes depending on type of document.
Convert Selection: Converts selected elements. A destination folder must have been selected previously.
Convert All: Converts all elements on the list. A destination folder must have been selected previously.
Clicking on the Interstudio icon brings up a window showing company details and current version of DWGDirect library:


This is what the main CAD File Converter window looks before converting to DWF:

Windows

Mac Os X
After converting, elements on the list that have been converted show a • symbol to their left.
Clicking on an element, some details are brought up below the list, such as: full location, type and version of the document.

In the above example the selected element is type DWG and version ACAD2010/11.
Should conversion not be carried out successfully, 'Err' appears where the symbol was on the left. By clicking on the element you can see which type of error occurred.