Comma, means the song finishes and a clear break of at least 3 seconds before next song
Soft Arrow > means the first song ends, then the second one starts immediately, less than 2 second gap, no layover. Either Kyle carried bass from one song to the next or another instrument like a DJ or percussions carried it from one to the next. Music never stopped.
Hard Arrow -> means the second song starts before the first one ends, little to extreme layover.
Debut = First Time Played
Stoopid Debut = First Time Full Band
Tour Debut = First Time During Tour