-\preamble PuTTY is a free (MIT-licensed) Win32 Telnet and SSH
-client. This manual documents PuTTY, and its companion utilities
-PSCP, PSFTP, Plink, Pageant and PuTTYgen.
+\e{Note to Unix users:} this manual currently primarily documents the
+Windows versions of the PuTTY utilities. Some options are therefore
+mentioned that are absent from the \i{Unix version}; the Unix version has
+features not described here; and the \i\cw{pterm} and command-line
+\cw{puttygen} utilities are not described at all. The only
+Unix-specific documentation that currently exists is the
+\I{man pages for PuTTY tools}man pages.