## DDE Connections

Hugin provides DDE (Dynamic Data Exchange). With DDE other programs (like Excel) are able to use the probabilities calculated in Hugin.

You establish a DDE connection with the following application, topic, and item:

- Application: This is the name of the service and will always, when communicating with Hugin, be the string "Hugin".
- Topic: The topic under DDE connections with hugin is the filename of the network, ex. "c:\mynets\net1.hkb".
- Item: This is the interesting part. Here we specify which data we would like to receive from the network. This can be in 1 of 4 forms:
  1. "?" - Request the names of all the nodes in the network
  2. "node-name:?" - Request the state labels for a node (Note the colon).
  3. "node-name:*" - Request values for all states of the node (Note the colon).
  4. "node-name:state-num" - Request the value for node node-name at state state-num (Again, note the colon).

1 and 2 are only supported as cold links, while 3 and 4 are supported as warm links (links that automatically get updated when values change).

You can easily copy a DDE link to the clipboard using the copy function. See the Copy DDE Link section to read more about this.

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