The image has the following screen instructions:

Select the datatype transformation map to use for the rule. Select a source or target and choose the appropriate Bind button to bind the item to the rule. When all rule signature sources and targets have been bound, choose Apply.

Under the Rule Signature heading, the Source, from integer, unspecified is followed by the Bind button. The Target, to integer, unspecified, is also followed by a Bind button. A list of selectable sources follows, including Event Type Parameters and Datatype Parameters. The list of selectable targets includes Event Type Parameters and Datatype Parameters. End of description.