Defines the location of your Portage tree.
.br
Defaults to /usr/portage.
+.br
+\fB***Warning***\fR
+.br
+Storing data such as distfiles and binary packages in PORTDIR can
+be potentially dangerous. The default emerge configuration defaults to this
+behavior (which will work fine), however if you deviate from the default
+configuration by changing PKGDIR or DISTDIR, emerge \-\-sync may inadvertedly
+delete all your distfiles/binary packages. Please make sure to set
+\fBPORTAGE_EXTRA_RSYNC_OPTS\fR properly to insure the safety of files in PORTDIR.
.TP
\fBPORTDIR_OVERLAY\fR = \fI"[path] [different\-path] [etc...]"\fR
Defines the directories in which user made ebuilds may be stored and not