Charge asymmetry in e^+- e^-, ep, e\gamma, \gamma\gamma collisions
  Study of charge asymmetry within a neutral system T produced in processes AB\to T X can help solve many problems in particle physics. We collect here some problems, which have been studied well, as well as proposals for future activity with a brief discussion of the main results expected in each case. 
I. F. Ginzburg (Sobolev Institute of Mathematics, Novosibirsk, Russia,   & Perugia, INFN, Italy)