diff --git a/src/util.rs b/src/util.rs
index 446217c..e4707e1 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -21,20 +21,22 @@ impl<T: PartialEq> BaseTimer<T> {
         self.last = value;
     }
 
-    /// Reset the "last" value without triggering change detection
-    pub fn reset_value(&mut self, value: T) {
-        self.last = value;
-    }
-
+    /// Returns true if `preset` time has passed since the last value change
     pub fn timer(&self, now: time::Instant, preset: time::Duration) -> bool {
         self.change.map(|tt| now >= tt + preset).unwrap_or(true)
     }
 
+    /// Returns the time since the last value change
     pub fn timer_value(&self, now: time::Instant) -> time::Duration {
         self.change
             .map(|tt| now - tt)
             .unwrap_or(time::Duration::ZERO)
     }
+
+    /// Reset the "last" value without triggering change detection
+    pub fn reset_value(&mut self, value: T) {
+        self.last = value;
+    }
 }
 
 pub struct TimerResult {