You can send key-ins to OpenCities Map through a DDE link. For example, you can create a macro in a spreadsheet to start a DDE "conversation" with and send key-ins to OpenCities Map.

OpenCities Map understands the following types of DDE requests:

• INITIATE — Establishes a DDE link with OpenCities Map.
• EXECUTE — Passes key-in(s) to OpenCities Map.
• TERMINATE — Ends DDE conversation with OpenCities Map .

Applications that can make these DDE requests include Excel, Lotus 1-2-3, Object Vision, Visual Basic, and Word Basic.