Routes in, embed out.

Shorthand

JFK-LHR

One route. JFK-LHR-CDG adds a stop. JFK to LHR works too.

JFK-LHR, SFO-NRT

A new line or a comma starts another route.

color:blue

Colors every route after it, until the next color:. Names: black, blue, red, teal, amber, purple, green, pink, cyan, magenta.

77W

Plane code on the next route only. color:green,738,ORD-LGA sets color, plane, and route together.

2750mi@ORD

A distance ring. Miles, km, or nm. A circle, not award space.