--- a/docs/manual.sgml	Wed Aug 24 16:04:52 2011 +0300
+++ b/docs/manual.sgml	Wed Aug 24 16:05:41 2011 +0300
@@ -800,8 +800,7 @@
 
  <listitem><para>
 <link linkend="usage-general-hbtick">Heartbeat and tick prediction</link>.
-Display of current average approximate heartbeat duration and prediction of
-next "tick".
+Display prediction of next "tick" via a heartbeat counter.
 </para></listitem>
 
  <listitem><para>Functions for binding command strings to macros,
@@ -1879,16 +1878,12 @@
 </para>
 
 <para>
-The usage of this feature is simple: There are two new fields displayed
+The usage of this feature is simple: There is one new field displayed
 on the <link linkend="usage-general-statusline">statusline</link>, the
-value labeled as "HB" shows current running average heartbeat duration
-in seconds. This is mostly for informal purposes, and cursory debugging,
-as you can see if the predictor starts going awry.
-</para>
-<para>
-The field labeled "T" shows number of heartbeats from last tick, next tick
+value labeled as "T" shows number of heartbeats from last tick, next tick
 usually occurs at 9 or 10. It should always be 10, but due to how we
-"force" simulated HBs, they will not always match the real ones.
+"force" simulated HBs and interaction with fast metabolism, they will
+not always match the real ones.
 <emphasis>First tick after leaving battle will not usually be predicted
 correctly, but the situation should normalize after it.</emphasis>
 </para>
@@ -1900,7 +1895,8 @@
 </para>
 <para>
 <emphasis>Stethoscope is an item, available from Arelium's tinkerer's toolshop.</emphasis>
-You can use it by applying, 'apply stethoscope to ggr'.
+You can use it by applying, 'apply stethoscope to ggr'. Easiest way is to
+add that to your eqset swapping commands.
 </para>
 </note>
 
@@ -1919,7 +1915,7 @@
 
 <itemizedlist>
  <listitem><para>Heartbeat duration (delta) is 3.0 seconds to start
- with, we adjust slowly towards the player's "real" heartbeat
+ with, we adjust slowly towards the player's "real" average heartbeat
  frequency.
  </para></listitem>