Kirk Frameworks JKS-C, Serotta Nova, Gazelle AB-Frame, Fuji Team Issue, Schwinn Crosscut, All-City Space Horse
Looks like a short hand version of the stage profile. Delta 1 = Cat 1 climb - then the km point to summit perhaps. And so on. S is most likely Sprint point. That second X looking thing is the only thing I can't decide what it is. Other than maybe feed zone.
edit: Keith99 - this is what I get for composing half of a response, going downstairs to the mall for a smoothie and coming back to submit.
I do something similar when touring, or on a long ride in an area I'm not familiar with. I just tape it to the stem. Instead of taking out a map (which I often keep under the leg of my shorts on the side of my thigh) I can see how far to whatever town or turn or whatever. I hate missing turns or wrong turns on long rides. The ride is already long enough!