Instead of pressing ctrland the x, c, and vkeys for cut, To get the traditional Delete function on the Mac, press and hold the fn(function) key while pressing the deletekey, and you'll delete the character to the right of the cursor. If you have a NooElec Brand RTL-SDR or some other DVB-T dongles based on the Realtek RTL2832U, then plug it into your Mac's USB port and type the following at the Terminal: rtl_test -t The RTL-SDR program contains many utilities. Type 'rtl', and you should see the RTL-SDR Source available.The April 2018 Update makes huge strides forward, though, and the new SDR brightness setting means you can finally multitask while watching HDR videos.