diff --git a/sys/boot/common/loader.8 b/sys/boot/common/loader.8 index cac56743a69f..1b6063799a8f 100644 --- a/sys/boot/common/loader.8 +++ b/sys/boot/common/loader.8 @@ -671,8 +671,9 @@ Overrides the compile-time set value of or the preset default of 512. Must be a power of 2. .It Va twiddle_divisor -Throttles the output of the `twiddle' I/O progress indicator displayed -while loading the kernel and modules. +Throttles the output of the +.Sq twiddle +I/O progress indicator displayed while loading the kernel and modules. This is useful on slow serial consoles where the time spent waiting for these characters to be written can add up to many seconds. The default is 1 (full speed); a value of 2 spins half as fast, and so on.