It's pronounced "cat-sir"

useful engineer binds:
bind q "slot3;wait;eureka_teleport 1"
bind mouse4 "slot3;wait;eureka_teleport 0"
bind mouse3 "destroy 2 0; build 2 0"
bind 4 "destroy 0 0; build 0 0;"
bind 5 "destroy 1 0; build 1 0;"
bind 6 "destroy 1 1; build 1 1;"