+@item --disable-ldb
+@cindex ldb
+@cindex ldb, disabling
+@cindex disabling ldb
+Disable the low-level debugger. Only effective if SBCL is compiled
+with LDB.
+
+@item --lose-on-corruption
+@cindex ldb
+There are some dangerous low level errors (for instance, control stack
+exhausted, memory fault) that (or whose handlers) can corrupt the
+image. By default SBCL prints a warning, then tries to continue and
+handle the error in Lisp, but this will not always work and SBCL may
+malfunction or even hang. With this option, upon encountering such an
+error SBCL will invoke ldb (if present and enabled) or else exit.
+
+
+@item --script @var{filename}
+As a runtime option this is equivalent to @code{--noinform}
+@code{--disable-ldb} @code{--lose-on-corruption}
+@code{--end-runtime-options} @code{--script} @var{filename}. See the
+description of @code{--script} as a toplevel option below. If there
+are no other commandline arguments following @code{--script}, the
+filename argument can be omitted.
+
+
+@item --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.
+
+
+@item --no-merge-core-pages
+Ensures that no sharing hint is provided to the operating system.
+
+
+@item --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.
+
+