  Order-alpha_s QCD corrections in the soft-gluon approximation to angular
distributions of decay charged leptons in the process e+e- -> t tbar, followed
by semileptonic decay of t or tbar, are obtained in the e+e- centre-of-mass
frame. As compared to distributions in the top rest frame, these have the
advantage that they would allow direct comparison with experiment without the
need to reconstruct the top rest frame or a spin quantization axis. Analytic
expressions for the distribution in the charged-lepton polar angle and triple
distribution in the polar angle of t and polar and azimuthal angles of the
lepton are obtained. Numerical values are discussed for total c.m. energies of
400 GeV and 800 GeV.
