LTspice Adding Third Party Models

[@darrellhambley7245]

At 7:10 in the video you suddenly show a .subckt on the screen. Please tell us how do you get to that screen? I downloaded a FET subcircuit from a manufacturer and it comes as a text file and a symbol. If I open it, I don't get that screen that you show at 7:10. Windows just opens it as a text file. Also, what do you do with the downloaded LTspice Symbol file? How do I get this symbol onto my schematic?