Symbols and their functional significance

Question

[lmaitreyi]

http://pathwaymaps.com/maps/427 While I can understand +P stands for phosphorylation, what does B , CS, TR, CM mean. Why are the graphical symbols in this picture different; there should be some functional aspects that differentiate these symbols. Can someone help?

[Benn]

In the top right of that page it says: contact us. Did you ask them for clarification already?

[lmaitreyi]

Thank you I have written to them but no avail!!

Answer 1

[lmaitreyi]

Thanks Benn. They didn't respond but through my own reads/searches I figured it out!