\begin{table}%t2 \caption{\label{starssamples}Breakdown of WFI SMC sample (Col.~2) and the Galactic sample (Col.~3)$^{1}$.} %\centerline { \begin{tabular}{lll} \hline \hline Type & Number & Number \\ & (SMC) & (Galaxy) \\ \hline Open clusters & 84 & 54\\ O & 25 & 13\\ Oe+Oe? & 6 & 3\\ B & 1384 & 1741\\ Be & 109 & 52\\ Be? & 54 & 116 \\ A & 250 & 495\\ Ae+Ae? & 7 & 57\\ Other non-ELS & 2408 & 17~845\\ ELS outside main sequence & 90 & \\ Unclassified ELS & 49 & \\ NGC~346 (Be, HBe, WR, etc.) & 55 & \\ Total & 4437 & 20~322 \\ \hline \end{tabular}} \par \smallskip $^1$ {\scriptsize The Galactic sample is from \citet{mcs2005} (Col.~3). The number of stars per spectral types, and per emission-line characteristics are given. ELS denotes emission-line stars. The first line after the titles gives the number of open clusters used.} \end{table}