 HELP: nano-count ( -- ns )
 { $values { "ns" integer } }
 { $description "Outputs a monotonically increasing count of nanoseconds elapsed since an arbitrary starting time. The difference of two calls to this word allows timing. This word is unaffected by system clock changes." }
-{ $notes "This is a low-level word. The " { $link time } " word may be used to time code execution time. For system time, use " { $link system-micros } "." } ;
+{ $notes "This is a low-level word. The " { $vocab-link "tools.time" } " vocabulary defines words to time code execution time. For system time, use " { $link system-micros } "." } ;
 
 HELP: image
 { $values { "path" "a pathname string" } }

"Getting the current time:"
{ $subsections
    system-micros
    system-micros
}
"Getting a monotonically increasing nanosecond count:"
{ $subsections nano-count }

USING: generic help.markup help.syntax kernel math memory
namespaces sequences kernel.private strings classes.singleton ;
IN: system

ABOUT: "system"
