\twocolitem{\helpref{wxZlibInputStream}{wxzlibinputstream}}{Zlib (compression) input stream class}
\twocolitem{\helpref{wxZlibOutputStream}{wxzliboutputstream}}{Zlib (compression) output stream class}
\twocolitem{\helpref{wxZipInputStream}{wxzipinputstream}}{Input stream for reading from ZIP archives}
+\twocolitem{\helpref{wxZipOutputStream}{wxzipoutputstream}}{Output stream for writing from ZIP archives}
\twocolitem{\helpref{wxSocketInputStream}{wxsocketinputstream}}{Socket input stream class}
\twocolitem{\helpref{wxSocketOutputStream}{wxsocketoutputstream}}{Socket output stream class}
\end{twocollist}