From 8d4e3e75d010ff107dfcb821a2c506b3c2819bee Mon Sep 17 00:00:00 2001
From: Carlo Camilloni <carlo@cc536-3640.personal.private.ch.cam.ac.uk>
Date: Mon, 25 Jun 2012 16:51:29 +0100
Subject: [PATCH] MIN is an optional keyword for the restart

---
 src/BiasRatchet.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/BiasRatchet.cpp b/src/BiasRatchet.cpp
index 3908d9c80..989cb7395 100644
--- a/src/BiasRatchet.cpp
+++ b/src/BiasRatchet.cpp
@@ -10,7 +10,7 @@ namespace PLMD{
 
 //+PLUMEDOC BIAS ABMD 
 /**
-Adds an ratchet-and-pawl like restraint on one or more variables
+Adds a ratchet-and-pawl like restraint on one or more variables
 
 \par Syntax
 \verbatim
@@ -59,9 +59,9 @@ PLUMED_REGISTER_ACTION(BiasRatchet,"ABMD")
 void BiasRatchet::registerKeywords(Keywords& keys){
   Bias::registerKeywords(keys);
   keys.use("ARG");
-  keys.add("compulsory","TO","The array of a values in the above equation");
+  keys.add("compulsory","TO","The array of target values");
   keys.add("compulsory","KAPPA","The array of force constants.");
-  keys.add("compulsory","MIN","Also the array of a values in the above equation - I don't understand.");
+  keys.add("optional","MIN","Array of starting values (usefull for restarting)");
 }
 
 BiasRatchet::BiasRatchet(const ActionOptions&ao):
@@ -73,7 +73,6 @@ kappa(getNumberOfArguments(),0.0)
   parseVector("KAPPA",kappa);
   plumed_assert(kappa.size()==getNumberOfArguments());
   parseVector("MIN",min);
-  plumed_assert(min.size()==getNumberOfArguments());
   parseVector("TO",to);
   plumed_assert(to.size()==getNumberOfArguments());
   checkRead();
-- 
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