ADAU1467 SigmaStudio4.2 The specification of each block in the toolbox

Hi,

I'd like to know the specification of each blocks in the SigmaStudio4.2 toolbox.

1. There are 2 Volume Control blocks as below. Please let me know clearly the difference between these specifications.

    Volume Controls -> Adjustable Gain -> Clickless SW Slew -> RC Optimized

    Volume Controls -> Adjustable Gain -> Clickless SW Slew -> RC Accurate

2. There is "Adjustable Gain -> Clickless HW Slew" block in the Tree ToolBox.

  How do I change Tr / Tf ?

3. There is an item of "Adjustable Volume Control" when I look at the help of the SigmaStudio4.2, but that block does not exist in the Tree Toolbox of the actual tool.

   Is this an item that does not already exist?

Thanks and Regards,