X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=doc%2Fdev%2Fsystem-file-format.texi;h=a5a89f4ded01672a57c53791d4f81d51ca3bd24f;hb=bde4a7daf82beb5639a02079a9e682c8d33720e0;hp=500d74f66556fcff16d9ef14cf547a2375b8ee2e;hpb=bcac9faa921fc6902abf6fbf4743f661fc8a5375;p=pspp

diff --git a/doc/dev/system-file-format.texi b/doc/dev/system-file-format.texi
index 500d74f665..a5a89f4ded 100644
--- 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
@@ -1641,7 +1651,7 @@ The number of bytes in the ZLIB data trailer.  This and the previous
 field sum to the size of the system file in bytes.
 @end table
 
-The data header is followed by @code{(ztrailer_ofs - 24) / 24} ZLIB
+The data header is followed by @code{(ztrailer_len - 24) / 24} ZLIB
 compressed data blocks.  Each ZLIB compressed data block begins with a
 ZLIB header as specified in RFC@tie{}1950, e.g.@: hex bytes @code{78
 01} (the only header yet observed in practice).  Each block
@@ -1678,7 +1688,7 @@ been observed so far.
 
 @item int32 n_blocks;
 The number of ZLIB compressed data blocks, always exactly
-@code{(ztrailer_ofs - 24) / 24}.
+@code{(ztrailer_len - 24) / 24}.
 @end table
 
 The fixed header is followed by @code{n_blocks} 24-byte ZLIB data