* Version and Date Info Record::
* Identification Records::
* Variable Count Record::
+* Precision Record::
* Case Weight Variable Record::
* Variable Records::
* Value Label Records::
@node Variable Count Record
@section Variable Count Record
-The variable count record has tag code @samp{4}. It consists of two
-integer fields. The first contains the number of variables in the file
-dictionary. The purpose of the second is unknown; it contains the value
-161 in all portable files examined so far.
+The variable count record has tag code @samp{4}. It consists of a
+single integer field giving the number of variables in the file
+dictionary.
+
+@node Precision Record
+@section Precision Record
+
+The precision record has tag code @samp{5}. It consists of a single
+integer field specifying the maximum number of base-30 digits used in
+data in the file.
@node Case Weight Variable Record
@section Case Weight Variable Record