  We present the Monte Carlo event generator YFSWW3 version 1.16 for theprocess
of W-pair production and decay in electron-positron collisions. It includes
${\cal O}(\alpha)$ electroweak radiative corrections in the WW production stage
together with the ${\cal O}(\alpha^3)$ initial-state-radiation (ISR)
corrections in the leading-logarithmic (LL) approximation, implemented within
the Yennie-Frautschi-Suura (YFS) exclusive exponentiation framework. The photon
radiation in the W decays is generated by the dedicated program PHOTOS up to
${\cal O}(\alpha^2)$ LL, normalised to the W branching ratios. The program is
interfaced with the $\tau$ decay library TAUOLA and the quark
fragmentation/hadronization package JETSET. The semi-analytical code KORWAN for
the calculations of the differential and total cross-sections at the Born level
and in the ISR approximation is included.
