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+.TH COREDOWN 1 COREDOWNDOWN
+.SH NAME
+coredown - Disable all but one CPU core
+.SH SYNPOSIS
+coredown
+.RI [ count ]
+.SH DESCRIPTION
+The
+.B coredown
+utility disables all CPU cores on the machine
+expect the CPU 0.
+.PP
+This is designed as a workaround for virtual machines
+that have input performance issues (keyboard input lag
+and keys getting stuck) when more than one CPU core is
+online.
+.SH OPTIONS
+No options are supported.
+.SH OPERANDS
+The following operand is supported:
+.TP
+.I count
+Enable the first
+.I count
+CPU cores and disable the rest.
+.SH STDIN
+The
+.B coredown
+utility does not use the standard input.
+.SH INPUT FILES
+None.
+.SH ENVIRONMENT VARIABLES
+No environment variables affects the execution of
+.B coredown
+.SH ASYNCHRONOUS EVENTS
+Default.
+.SH STDOUT
+The
+.B coredown
+utility does not use the standard output.
+.SH STDERR
+The standard error is used for diagnostic messages.
+.SH OUTPUT FILES
+None.
+.SH EXTENDED DESCRIPTION
+None.
+.SH EXIT STATUS
+If the
+.B coredown
+utility fails it will exit with one of the following statuses:
+.TP
+0
+Successful completion.
+.TP
+1
+An error occurred.
+.SH CONSEQUENCES OF ERRORS
+Default.
+.SH APPLICATION USAGE
+None.
+.SH EXAMPLES
+None.
+.SH RATIONALE
+None.
+.SH NOTES
+The is no difference between the
+.BR coreup (1)
+and
+.BR coredown (1)
+utilities when the
+.I count
+operand is specified.
+.SH BUGS
+None.
+.SH FUTURE DIRECTIONS
+None.
+.SH SEE ALSO
+.BR coreup (1)