-Pack executables and shell scripts using L<upx(1)>.
-
-This is not done by default because although it can reduce the image
-size, it increases the amount of memory used since those executables
-cannot be shared.
+This option has been removed in febootstrap 2.5. In previous versions
+it was used to pack executables using the external C<upx> program.
+However it was not enabled by default and never worked very
+effectively.