Extension (type 7) records, in ascending numerical order of their
subtypes.
+System files written by SPSS include at most one of each kind of
+extension record. This is generally true of system files written by
+other software as well, with known exceptions noted below in the
+individual sections about each type of record.
+
@item
Dictionary termination record.
@item char attributes[];
The attributes, in a text-based format.
-In record type 17, this field contains a single attribute set. An
+In record subtype 17, this field contains a single attribute set. An
attribute set is a sequence of one or more attributes concatenated
together. Each attribute consists of a name, which has the same
syntax as a variable name, followed by, inside parentheses, a sequence
an attribute with a single value and an attribute array with one
element.
-In record type 18, this field contains a sequence of one or more
+In record subtype 18, this field contains a sequence of one or more
variable attribute sets. If more than one variable attribute set is
present, each one after the first is delimited from the previous by
@code{/}. Each variable attribute set consists of a long
variable name,
followed by @code{:}, followed by an attribute set with the same
-syntax as on record type 17.
+syntax as on record subtype 17.
+
+System files written by @code{Stata 14.1/-savespss- 1.77 by
+S.Radyakin} may include multiple records with subtype 18, one per
+variable that has variable attributes.
The total length is @code{count} bytes.
@end table