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Repetitive NPC dialogue after familiar with the game
I'm communicating:
If in space, bringing up the Drone Interface (detault 'T') or Action button (default 'F') skips audio.
I'm hiring NPCs:
If in space, 'T' skips audio but drops us out the Sidebar. Can be quicker if using number shortcuts for hiring screen (Return-6), particularly if hiring Teladi.
I'm asking NPCs to work on my ship or station:
If doing so while docked, 'Escape' skips the animation sequence and the audio.
I'm doing looking for, or undertaking Smalltalk:
'Borderless Windowed mode' comes in handy as Alt+Tab to (eg) a website cuts the audio but lets you see how things progress, if you keep the website window clear of the subtitles. Similarly, while hunting for Smalltalk, you can do the same thing to pass the time while waiting for someone to start speaking.