man/emerge.1: Fix bug #405783 by elaborating -n

diff --git a/man/emerge.1 b/man/emerge.1
index 38e38e3a239b4a96924fad98621730687192fad6..06a4e3dacad4073f143798f189eaed3e12f0237a 100644 (file)
--- a/man/emerge.1
+++ b/man/emerge.1
@@ -590,7 +590,8 @@ Skips the packages specified on the command\-line that have already
 been installed.  Without this option, any package atoms or package sets
 you specify on the command\-line \fBwill\fR cause Portage to remerge
 the package, even if it is already installed.  Note that Portage will
-not remerge dependencies by default.
+not remerge dependencies by default. This option can be used to update the
+world file without rebuilding the packages.
 .TP
 .BR "\-\-nospinner"
 Disables the spinner for the session.  The spinner is active when the