After clicking Add in the Driver Block Parameter dialog and selecting tracks in the Track View Pick dialog to create a Block, clicking OK in the Track View Pick dialog opens the Block Parameters dialog.
Interface

- Name Field
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Names the block.
- Start, End
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Set the range of the block in frames.
- Color
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Selects a color for the Block. Displays a color selection dialog.
- OK
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Saves the parameters and closes the dialog.
- Cancel
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Closes the dialog without saving the parameters.