• angle_diff() : turtle_math
• control_command() : turtle_math
• cupidon() : turtle_dating
• dist() : turtle_math
• orbit_command() : turtle_math
• perp() : turtle_math
• turtle1_align() : turtle_coverage
• turtle1_coverage() : turtle_coverage
• turtle1_go() : turtle_coverage , turtle_dating , lonely_turtle
• turtle1_pose_updated() : turtle_dating , lonely_turtle , turtle_coverage
• turtle1_task() : lonely_turtle
• turtle1_wandering() : turtle_dating
• turtle2_go() : turtle_dating
• turtle2_orbit() : turtle_coverage
• turtle2_orbiting() : turtle_coverage
• turtle2_pose_updated() : turtle_coverage , turtle_dating
• turtle2_wandering() : turtle_dating
• unit() : turtle_math