some of the changes for validation earlier reverted from d20281a

railties/guides/source/active_model_basics.textile

@@ -163,12 +163,14 @@ person.first_name_changed? #=> true
 </ruby>
 
 Track what was the previous value of the attribute.
+
 <ruby>
 #attr_name_was accessor
 person.first_name_was  #=> "First Name"
 </ruby>
 
 Track  both previous and current value of the changed attribute. Returns an array if changed else returns nil
+
 <ruby>
 #attr_name_change
 person.first_name_change #=> ["First Name", "First Name 1"]

railties/guides/source/active_record_querying.textile

@@ -132,7 +132,7 @@ SELECT * FROM clients ORDER BY clients.id DESC LIMIT 1
 
 <tt>Model.last</tt> returns +nil+ if no matching record is found. No exception will be raised.
 
-h5. +first!+
+h5(#first_1). +first!+
 
 <tt>Model.first!</tt> finds the first record. For example:
 
@@ -149,7 +149,7 @@ SELECT * FROM clients LIMIT 1
 
 <tt>Model.first!</tt> raises +RecordNotFound+ if no matching record is found.
 
-h5. +last!+
+h5(#last_1). +last!+
 
 <tt>Model.last!</tt> finds the last record. For example:
 

railties/guides/source/performance_testing.textile

@@ -207,7 +207,7 @@ GC Time measures the amount of time spent in GC for the performance test case.
 
 h5. Metric Availability
 
-h6. Benchmarking
+h6(#benchmarking_1). Benchmarking
 
 |_.Interpreter|_.Wall Time|_.Process Time|_.CPU Time|_.User Time|_.Memory|_.Objects|_.GC Runs|_.GC Time|
 |_.MRI        | yes       | yes          | yes      | no        | yes    | yes     | yes     | yes     |
@@ -215,7 +215,7 @@ h6. Benchmarking
 |_.Rubinius   | yes       | no           | no       | no        | yes    | yes     | yes     | yes     |
 |_.JRuby      | yes       | no           | no       | yes       | yes    | yes     | yes     | yes     |
 
-h6. Profiling
+h6(#profiling_1). Profiling
 
 |_.Interpreter|_.Wall Time|_.Process Time|_.CPU Time|_.User Time|_.Memory|_.Objects|_.GC Runs|_.GC Time|
 |_.MRI        | yes       | yes          | no       | no        | yes    | yes     | yes     | yes     |