-As a runtime option equivalent to \-\-noinform
-\-\-end\-toplevel\-options \-\-script <filename>. See the description
-of \-\-script as a toplevel option below.
+As a runtime option equivalent to \-\-noinform \-\-disable\-ldb
+\-\-lose\-on\-corruption \-\-end\-runtime\-options \-\-script
+<filename>. See the description of \-\-script as a toplevel option
+below.
+.TP 3
+.B \-\-merge\-core\-pages
+When platform support is present, provide hints to the operating
+system that identical pages may be shared between processes until they
+are written to. This can be useful to reduce the memory usage on
+systems with multiple SBCL processes started from similar but
+differently\-named core files, or from compressed cores. Without
+platform support, do nothing.
+.TP 3
+.B \-\-no-merge\-core\-pages
+Ensures that no sharing hint is provided to the operating system.
+.TP 3
+.B \-\-default\-merge\-core\-pages
+Reverts the sharing hint policy to the default: only compressed cores
+trigger hinting. Uncompressed cores are mapped directly from the core
+file, which is usually enough to ensure sharing.