Sony IPELS PCS-TL50 Operating Instructions Manual page 7

To control the PCS-TL50 from the on-screen Remote Commander
When you click B Commander on the left part of the screen, the Remote Commander screen appears.
By clicking the various buttons on the Remote Commander image, you can control the unit in the same way you can
when using a real Remote Commander (PCS-RTL50), operating the camera, and dialing phone numbers.
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4. How to use "Controller"