doc: Improve description of extension subtype 5.

[pspp] / doc / dev / system-file-format.texi

diff --git a/doc/dev/system-file-format.texi b/doc/dev/system-file-format.texi
index 58bb37c155655b7dcd36cdd44e5a90838bd88d71..ca7c668287634dde3cc9fe5df2b909a593323860 100644 (file)
--- a/doc/dev/system-file-format.texi
+++ b/doc/dev/system-file-format.texi
@@ -1,3 +1,13 @@
+@c PSPP - a program for statistical analysis.
+@c Copyright (C) 2019 Free Software Foundation, Inc.
+@c Permission is granted to copy, distribute and/or modify this document
+@c under the terms of the GNU Free Documentation License, Version 1.3
+@c or any later version published by the Free Software Foundation;
+@c with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+@c A copy of the license is included in the section entitled "GNU
+@c Free Documentation License".
+@c
+
 @node System File Format
 @appendix System File Format
 
@@ -6,7 +16,7 @@ that describes how they may be interpreted.  This chapter describes
 the format of a system file.
 
 System files use four data types: 8-bit characters, 32-bit integers,
-64-bit integers, 
+64-bit integers,
 and 64-bit floating points, called here @code{char}, @code{int32},
 @code{int64}, and
 @code{flt64}, respectively.  Data is not necessarily aligned on a word
@@ -548,7 +558,7 @@ The value label record has the following format:
 int32               rec_type;
 int32               label_count;
 
-/* @r{Repeated @code{label_cnt} times}. */
+/* @r{Repeated @code{n_label} times}. */
 char                value[8];
 char                label_len;
 char                label[];
@@ -1508,7 +1518,8 @@ the following believed meanings:
 
 @table @asis
 @item 5
-A set of grouped variables (according to Aapi H@"am@"al@"ainen).
+A named variable set for use in the GUI (according to Aapi
+H@"am@"al@"ainen).
 
 @item 6
 Date info, probably related to USE (according to Aapi H@"am@"al@"ainen).