1 PSPP NEWS -- history of user-visible changes.
2 Copyright (C) 1996-9, 2000, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send PSPP bug reports to bug-gnu-pspp@gnu.org.
7 Changes from 0.6.2 to 0.7.8:
22 - PRESERVE and RESTORE
26 - SAVE TRANSLATE to CSV and tab-delimited files
30 * Changes to existing commands:
32 - AUTORECODE has a new GROUP subcommand.
34 - CROSSTABS has been re-implemented to fix numerous bugs.
36 - DO REPEAT command has been reimplemented. Now, when DO REPEAT
37 contains an INCLUDE or INSERT command, substitutions are not
38 applied to the included file.
40 - HOST has been updated to use more modern syntax.
42 - INCLUDE and INSERT have a new ENCODING subcommand.
44 - MISSING VALUES can now assign missing values to long string
47 - NPAR TESTS has new KRUSKAL-WALLIS, SIGN, WILCOXON, and RUNS
50 - SET and SHOW no longer have ENDCMD, NULLINE, PROMPT, CPROMPT, and
51 DPROMPT subcommands. The defaults are now fixed values.
53 - VALUE LABELS can now assign value labels to long string
56 * Other language changes:
58 - The new DATASET commands replace the "scratch file" PSPP
59 extension, which is no longer supported.
61 - Strings may now include arbitrary Unicode code points specified
62 in hexadecimal, using the syntax U'hhhh'. For example, Unicode
63 code point U+1D11E, the musical G clef character, may be
64 expressed as U'1D11E'.
66 See the "Tokens" section in the PSPP manual for more information.
68 - In previous versions of PSPP, in a string expressed in
69 hexadecimal with X'hh' syntax, the hexadecimal digits expressed
70 bytes in the locale encoding. In this version of PSPP, X'hh'
71 syntax always expresses bytes in UTF-8 encoding.
73 See the "Tokens" section in the PSPP manual for more information.
75 * PSPPIRE graphical user interface improvements:
77 - Added support for non-ASCII characters in strings, labels and
80 - A "Split Window" function is available, which makes it easier to
81 see different parts of a large data file.
83 - Data files can now be opened by specifing their name as the first
84 argument. This means that on a properly configured desktop, double
85 clicking on an icon will open the file.
89 - The new "cairo" output driver supports output in PostScript, PDF,
90 and SVG formats. Its functionality is a superset of that of the
91 "postscript" driver, which has been removed. You must have Cairo
92 and Pango installed to build the "cairo" driver.
94 - Charts are now produced with Cairo and Pango, instead of libplot.
95 Without them, the new graphing features will not work. If you do
96 not have Cairo and Pango installed, you must run `configure' with
99 - The plain text output driver now properly supports multibyte UTF-8
100 characters, including double-width characters and combining
103 * The "pspp" program has a new option --batch (or -b) that selects
104 "batch" syntax mode. In previous versions of PSPP this syntax mode
105 was the default. Now a new "auto" syntax mode is the default. In
106 "auto" mode, PSPP interprets most syntax files correctly regardless
107 of their intended syntax mode.
109 See the "Syntax Variants" section in the PSPP manual for more
112 * The "pspp" program has a new option --syntax-encoding that
113 specifies the encoding for syntax files listed on the command line,
114 as well as the default encoding for syntax files included with
115 INCLUDE or INSERT. The default is to accept the system locale
116 encoding, UTF-8, UTF-16, or UTF-32, automatically detecting which
117 one the system file uses.
119 See the documentation for the INSERT command in the PSPP manual for
122 * A new Perl module allows Perl programs to read and write PSPP
125 * A tutorial chapter has been added to the user manual.
127 Changes from 0.6.1 to 0.6.2:
131 - Dutch, thanks to Harry Thijssen.
133 - Brazilian Portuguese, thanks to Michel Boaventura.
135 Thanks for translations are also due to the coordinators at
136 translationproject.org.
138 * Statistical bug fixes:
140 - REGRESSION: Report correct standard error of the estimate (bug
143 - T-TEST: Report correct significance of paired sample T-test in
144 the common case (bug #26936) and corner cases. Thanks to Mike
145 Griffiths and Matej Cepl for reporting these bugs.
147 * Build fixes and changes:
149 - Fix build with GTK+ 2.17.4 and later.
151 - Make running "make" after running "configure" with different
152 settings reliably rebuild version.c.
154 - Cygwin and MinGW build fixes.
156 - Fixes for building with recent gnulib.
158 - The Makefile now honors two new variables, PSPP_LDFLAGS and
159 PSPPIRE_LDFLAGS, that affect linking of the PSPP and PSPPIRE
160 binaries, respectively. This makes building easier for some
163 - Fixes for "configure --enable-relocatable" (bug #25508).
165 * Data file bug fixes and changes:
167 - Fix reading text data files that contain a mix of white space
168 and commas. Now "a ,b" is treated as two fields containing "a"
169 and "b"; previously it was treated as three, with an empty field
172 - Fix writing corrupted .sav files on Windows.
174 - Fix writing variable labels longer than 252 bytes to save files.
175 Thanks to Robert Westlund for reporting this bug.
177 - Fix writing corrupted .por files (bug #26034).
179 - Fix reading .por files whose initial lines are not padded out
180 with spaces as expected.
182 - PSPP will no longer issue warnings about some .sav file records
183 or values that it does not understand. These warnings were
184 harmless, but needlessly alarmed some users.
186 - Fix crash reading empty string fields from PostgreSQL databases.
188 * Bug fixes that affect PSPP and PSPPIRE:
190 - Users may now control precision of output statistics. Instead
191 of hard coding the width and decimals of output numbers, respect
192 the default format in most instances. Counts are now normally
193 displayed with the format of the weight variable, if any.
195 - Fix crash when an INSERT command specifies the name of a file
196 that does not exist (bug #24569).
198 - Fix crash when CROSSTABS specifies a long-string variable (bugs
201 - Fix crash drawing pie charts with many segments.
203 - Fix crash when NUMERIC specifies an invalid format.
205 * PSPPIRE bug fixes and changes:
207 - On Windows, write the output file to the user's home directory
208 instead of the current directory, to better match user
211 - Some data editor fixes.
215 - Fix typo in BINOMIAL section of user manual (bug #25892).
217 Changes from 0.6.0 to 0.6.1:
219 * Statistical bug fixes:
221 - Report correct standardized regression coefficients in linear
222 regression output (bug #23567).
224 * Bug fixes that affect PSPP and PSPPIRE:
226 - Avoid crash with pie charts (bug #24014).
228 - Don't append % to count totals (bug #24003).
230 - Don't crash on bad input (bug #24031).
232 - Don't crash if "end data." is not left aligned (bug #24115).
234 - Change default workspace value to 64 MB, to avoid unnecessary
235 disk accesses on modern machines.
239 - Add ".sav" or ".por" suffix to filename when saving with Save_As
242 - Make it possible to reopen the output window on Windows (bug
245 - A POSIX regular expression library is now included and used
246 automatically if the host does not have one or has one that is
249 * Build fixes and changes:
251 - Work around bug in GSL that prevented build with recent GCC
252 versions without manually adding -fgnu89-inline to CFLAGS.
254 - Also warn about missing prerequisites as we encounter them (bug
257 - Distribute necessary files to allow users working from the
258 distributed tarball to configure with --enable-gui-tools.
260 - Append $(EXEEXT_FOR_BUILD) to output file name when building
261 q2c, fixing build problems on Windows.
263 - GSL 1.8 or later is now required.
265 - Build errors with --enable-relocatable were fixed.
267 * The German translations were removed, since native German speakers
268 found them too poor to be useful.
270 Changes from 0.4.0 to 0.6.0:
272 * The PSPP license is now version 3 or later of the GNU General
273 Public License. Previously, it was version 2 or later.
275 * PSPP now has a graphical interface, called PSPPIRE. This
276 interface allows you to enter data and variable definitions
277 interactively. Commands may be executed in syntax form, or by
278 using the interactive dialog boxes available from the dropdown
281 * A few sample syntax files are now included in the `examples'
284 * Numerous major and minor bugs have been fixed.
288 * The INSTALL file now reflects the details of how to install
289 PSPP. It is a tailored version of the generic installation
290 instructions, instead of a verbatim copy.
292 * iconv, which is ordinarily installed as part of a Unix-like
293 system, is now required. If you don't have it already, you can
294 install GNU libiconv (http://www.gnu.org/software/libiconv/).
296 * libxml2 and zlib are new optional dependencies. They are
297 required to use PSPP's support for reading Gnumeric files.
299 Statistical procedure changes:
301 * REGRESSION is a new procedure for fitting linear models to data
302 via least-squares estimation.
304 * NPAR TESTS is a new procedure for non-parametric tests. In this
305 release, it supports binomial and chi-square tests.
307 * RANK is a new procedure to rank variables. It supports numerous
310 * FREQUENCIES can now output histograms and pie charts. These
311 features were present in earlier releases, but not documented.
313 User interface changes:
315 * In many situations where PSPP once terminated with a fatal
316 error, PSPP now recovers and continues execution.
318 * PSPP is now able to start up and run even if it cannot find its
321 * Journaling of interactive commands to a disk file is now
322 implemented. By default, journaling is enabled, to a file named
323 `pspp.jnl' in the current directory. SET JOURNAL may be used to
326 * The use of `+' between syntax file names on the command line to
327 prevent the dictionary from being cleared between their
328 executions is no longer supported. All syntax files are now
329 executed as if `+' had been specified.
331 * The -d/--define and -u/--undef command line options are no
332 longer supported. Instead, use /usr/bin/env or shell primitives
333 to define or clear environment variables before invoking PSPP.
335 * If a syntax file named named `rc' is found in a configuration
336 directory (such as $HOME/.pspp), it is executed before any
337 syntax file specified on the command line. The -r or
338 --no-statrc command line option may be used to disable this
343 * Output configuration options have changed. Please refer to the
344 manual for a full description of the available options.
346 In consequence, you will need to reinstall your "devices" file.
347 "make install" will do this for you.
349 * Most error messages are now written to PSPP output files by
350 default. SET ERROR can be used to disable this behavior.
352 * When invoked interactively, PSPP now by default produces output
353 on the terminal, piping it through the "more" program.
354 Previously, by default output was written only to file
355 pspp.list. On most terminals, the page length used for output
356 automatically adapts to the terminal size, even if the terminal
361 - This driver now supports charts in output. Charts are written
362 as separate files that the main output file refers to. By
363 default, charts are written in PNG format to files named
364 pspp-1.png, pspp-2.png, and so on.
366 - Configurations are provided that use VT100 (and xterm)
367 line-drawing characters in tables. The option "-o list-vt100"
368 requests use of this device for output to pspp.list.
372 - The default paper size is now determined using the PAPERSIZE
373 environment variable, or the LC_PAPER locale category on
374 systems that support it. If these are not set, the default is
375 now A4, instead of US letter. To make US letter the default,
376 set PAPERSIZE to "letter" in your environment.
378 - Font metrics are now read from AFM files, instead of
379 Groff-format metrics files. PostScript fonts can now be
382 In consequence, you will need to install an AFM file for each
383 font used in PostScript output. "make install" will install
384 AFM files for the standard PostScript fonts, including the
385 ones that the PostScript driver uses by default.
387 - Standard paper sizes no longer need to be specified through a
388 configuration file. The "papersize" configuration file is no
389 longer needed, or supported.
391 - The PostScript prologue is no longer obtained from the
392 "ps-prologue" configuration file. This configuration file is
393 no longer needed, or supported.
397 - The HTML prologue is no longer obtained from the
398 "html-prologue" configuration file. This configuration file
399 is no longer needed, or supported.
401 Command language changes:
403 * The following commands are new:
405 - GET DATA, which currently supports reading Gnumeric files and
406 text data files. It will be extended later to read other
407 types of foreign data.
409 - CD, to change the current directory.
411 - INSERT, to execute a syntax file.
413 - DELETE VARIABLES, to remove variables from the active file
416 - ADD DOCUMENT, to add text to active file documents.
418 - CLOSE FILE HANDLE (a PSPP extension; see below).
420 - XEXPORT, a PSPP extension that is a transformation equivalent
423 * The following functions for transformation expressions are new:
425 - DATEDIFF, for computing the difference of two dates.
427 - DATESUM, for advancing a date by a specified duration.
429 - VALUELABEL, to obtain the value label for a value.
431 * PSPP now supports very long string variables (over 255 bytes
434 * MATCH FILES now supports the FIRST and LAST subcommands.
436 * Previous versions of PSPP prohibited using commands to both read and
437 write a single file at the same time. Now, PSPP allows this, and
438 the new version of the file atomically replaces the old version.
440 * The following commands are no longer available. They will be
441 re-implemented in a later release:
443 - CLEAR TRANSFORMATIONS
449 * The PROCESS IF command, which was deprecated, has been removed.
450 You may replace any usage of it by SELECT IF following
451 TEMPORARY, which has the same effect.
453 * The output format for variables created by VECTOR may now be
454 specified as part of the VECTOR syntax.
456 "Scratch files", a new PSPP extension:
458 A scratch file, like a system file, consists of a dictionary and
459 any number of cases. Small scratch files are stored in memory;
460 one that grows too large is written to disk. By default, any file
461 handle whose name begins with # is assumed to refer to a scratch
464 Scratch files can be used just about anywhere a system or portable
465 file can be used. Also, portable files are now allowed in most
466 places that system files were allowed in previous PSPP version.
468 A new CLOSE FILE HANDLE command allows the storage associated with
469 scratch files to be freed. It also allows file handles to be
470 reassigned to new files.
472 For more information on scratch files, refer to the "File Handles"
473 section in the PSPP manual. For specifics of what commands now
474 allow what kinds of files to be specified, refer to the
475 documentation on those particular commands.
479 * Binary formats and IBM/360 formats, including ASCII/EBCDIC
480 translation, are now supported. Use FILE HANDLE to specify the
481 format of these files.
483 * Little-endian, big-endian, and VAX-endian formats are now
484 supported for integer binary formats when reading and writing
485 data files. The new RIB and WIB subcommands on the SET command
486 control endianness of integer data. The default is the host's
489 * IEEE 754, VAX, and IBM hexadecimal formats are now supported for
490 floating point binary formats when reading and writing data
491 files. The new RRB and WRB subcommands on the SET command
492 control the floating point format. The default is the host's
493 native floating point format.
495 * DATA LIST now supports the SKIP subcommand, to skip records at
496 the beginning of a file. For compatibility, DATA LIST now
497 treats N format as F format for FREE and LIST format input.
499 * The SAVE and XSAVE commands now support the UNSELECTED,
500 PERMISSIONS, NAMES, and MAP subcommands.
502 * The EXPORT command has been re-implemented to obtain better
503 results. Support for the UNSELECTED, DIGITS, and TYPE
504 subcommands has been added.
506 * For compatibility, PRINT now inserts a space at the beginning of
507 every output line, even lines that would otherwise be blank,
508 when OUTFILE is specified. (The behavior of WRITE is
511 * For compatibility, PRINT EJECT now inserts the digit `1' at the
512 beginning of each line that should begin a new page.
514 * For compatibility, WRITE now outputs the system-missing value as
515 a field filled with spaces. Binary formats are an exception.
516 (The behavior of PRINT is unchanged.)
520 * Input and output format descriptions have been rewritten. They
521 now precisely describe what is accepted on input and written on
524 * The descriptions of the PSPP system and portable file formats
525 have been extensively revised and improved.
527 For developers, the build system now requires Autoconf 2.60 and
530 Changes from 0.3.0 to 0.4.0:
532 Changes in build dependencies:
534 * The GNU Scientific Library (libgsl), version 1.6 or later, is
537 * libplot from GNU plotutils is optional. Without it, the new
538 graphing features will not work. If you do not have it
539 installed, you must run `configure' with --without-libplot.
541 * libgmp2 is no longer a dependency.
543 Newly implemented commands and statistical features:
545 * EXAMINE, including its graphing features.
547 * FREQUENCIES now supports percentiles.
555 * SORT CASES now sorts stably, that is, two cases with equal sort
556 criteria will be in the same relative order before and after the
559 * T-TEST (re-written).
561 * DATE and USE. These commands are parsed but otherwise ignored,
562 to enhance compatibility with certain command files that invoke
565 * VARIABLE WIDTH, VARIABLE ALIGNMENT, and VARIABLE LEVEL. These
566 currently have no effect on PSPP output, but their values are
567 written to and read from system files and thus may affect
568 third-party software.
570 * SET EPOCH implemented.
572 * DATA LIST FREE and DATA LIST LIST now support arbitrary field
575 * FILE HANDLE now supports custom tab widths.
577 Long variable names (and other identifiers) are now supported. Up
578 to the first 64 bytes of each identifier is significant. PSPP now
579 reads and writes system files compatible with SPSS version 12.
581 New --algorithm and --syntax command line options allow
582 SPSS-compatible or enhanced modes to be selected.
584 Support for transformation expressions has been rewritten and
585 significantly improved. Refer to the manual for details.
587 Calculation of moments (mean, standard deviation, kurtosis,
588 skewness) has been rewritten and should now be more accurate. In
589 --algorithm=enhanced mode moments may be more accurate than SPSS in
592 Numerous bugs have been fixed, too many to mention here. Many new
593 tests have been added, leading to the discovery and fixing of many
596 The ASCII output driver can now squeeze multiple blank lines into
599 Much of the code has been rewritten and refactored. It is now much
602 The FILE TYPE and REPEATING DATA commands have been disabled for
603 this release because their implementations were deemed too buggy to
604 be useful. They will be fixed and replaced in a future release.
606 New pspp-mode for Emacs (in pspp-mode.el).
608 Added rudimentary command-line completion for interactive input.
610 lib/julcal and lib/dcdflib are no longer used, so they have been
613 For developers, the build system now requires Autoconf 2.58 and
614 Automake 1.7. The included gettext has been updated to version
617 Some reports state that Texinfo 4.8, the latest version, may be
618 necessary to successfully format the documentation on some systems.
620 Version 0.3.0 changes since 0.2.3:
624 * Using alphanumeric variables in functions under AGGREGATE
627 * Under certain circumstances, the final case would be omitted
628 from the results of an AGGREGATE operation. Fixed.
630 * Undefined behavior was invoked by referencing a freed pointer
631 under certain circumstances. Fixed.
633 * A wrong record size was displayed when paging the active file to
636 * Not having enough temporary space for sorting caused a core
639 * Syntax errors in function descriptions on AGGREGATE caused core
642 * A null pointer was dereferenced, causing a core dump, when
643 PERCENTILES was specified on FREQUENCIES. This fixes the
644 problem, but PSPP still doesn't calculate percentiles.
646 * SORT always sorted in ascending order. Fixed.
648 * Some minor memory leaks in the expression parser were removed.
650 * Many assertions fixed for strict ANSI C compliance.
654 * SET ECHO ON now implemented, but turned off by default.
656 * PRINT specifier supported on END REPEAT.
660 * System libgmp2 library is used if installed instead of
661 unconditionally using the included libgmp2 subset.
663 * Extensive code cleanup, which continues.
665 * Added CORRELATIONS command parser, but not implemented.
667 Version 0.2.3 changes since 0.2.2:
671 * SPLIT FILE with a string variable caused a core dump. Fixed.
673 * Nested INCLUDEs didn't work. Fixed.
675 * The MATCH FILES procedure set the values of variables not present
676 to 0. It should have been SYSMIS. This is now fixed.
678 * The REMARK command was too aggressive about skipping lines. It
679 didn't like being the last command in a file.
681 * Comment parsing wasn't consistent with the rest of the code in its
682 idea of where one command ends and another starts. This meant
683 that sometimes commands would be mysteriously ignored. Thanks to
684 Dr. Dirk Melcher <BZN-mdksh@t-online.de> for reporting this bug.
686 * The TABLE subcommand on MATCH FILES worked only erratically at
687 best. This fixes it. Thanks to Dr. Dirk Melcher
688 <BZN-mdksh@t-online.de> for reporting this bug.
690 * VARIABLE LABELS rejected a slash before the first variable
691 specification, contradicting the documentation. Thanks to Walter
692 M. Gray <graywm@northernc.on.ca> for reporting this bug.
694 * Because of an incorrect optimization in memory allocation,
695 CROSSTABS sometimes segfaulted when asked to output multiple
696 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
699 * CROSSTABS didn't display value labels for column and row
700 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
703 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
704 <BZN-mdksh@t-online.de> for reporting this bug.
706 * The TABLE subcommand on MATCH FILES worked only erratically at
707 best. This fixes it. Thanks to Dr. Dirk Melcher
708 <BZN-mdksh@t-online.de> for reporting this bug.
710 * VARIABLE LABELS rejected a slash before the first variable
711 specification, contradicting the documentation. Thanks to Walter
712 M. Gray <graywm@northernc.on.ca> for reporting this bug.
714 * Because of an incorrect optimization in memory allocation,
715 CROSSTABS sometimes segfaulted when asked to output multiple
716 tables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
719 * CROSSTABS didn't display value labels for column and row
720 variables. Thanks to Walter M. Gray <graywm@northernc.on.ca> for
723 * WRITE didn't write line ends. Fixed. Thanks to Dr. Dirk Melcher
724 <BZN-mdksh@t-online.de> for reporting this bug.
726 * MATCH FILES corrupted memory and dumped core on some syntax
729 * MATCH FILES should set numeric values not available to the
730 system-missing value, not to 0. Thanks to Dr. Dirk Melcher
731 <BZN-mdksh@t-online.de> for reporting this bug.
733 * KEEP didn't work properly on the SAVE procedure. Fixed. Thanks
734 to Ralf Geschke <ralf@kuerbis.org> for reporting this bug.
738 * Some systems didn't like the way open_file was coded. Thanks to
739 Hankin <hankin@rogue.consultco.com> for pointing this out.
741 * The SAVE procedure didn't save long string variables properly.
742 Fixed by this patch. Thanks to Hankin
743 <hankin@rogue.consultco.com> for this patch.
745 * Minor documentation fixes for MATCH FILES.
747 Version 0.2.2 changes since 0.2.1:
751 * Fix behavior of PRINT SPACE for negative arguments.
753 * Fix reading some unusual system files.
755 * Fix LIST problems with very long variables. Thanks to Hankin
756 <hankin@dunno.com> for this bug report.
758 * Fix problems with some string format specifiers.
760 * Fix use of $CASENUM in expressions. Thanks to Dirk Melcher
761 <BZN-mdksh@t-online.de> for reporting this bug.
763 * Additional DATA LIST FREE and DATA LIST LIST fixes. Thanks to
764 Hankin <hankin@dunno.com> again on this one.
766 * Sometimes you may encounter a PSPP script that has to be
767 interpreted in interactive mode. Now you can use the -i flag to
770 * Warnings for egcs 1.1.1 cleaned up. (However you'll get lots of
771 `unused variable' warnings under gcc 2.7.2.3, fixing this will
776 * The files in gmp need the internationalization directory in
777 their include path. Thanks to OKUJI Yoshinori
778 <okuji@kuicr.kyoto-u.ac.jp> for pointing this out.
780 Version 0.2.1 changes since 0.2.0:
784 * Remember to include examples/ directory in distribution :-)
786 * Fixed gmp compile problems for some non-i386 architectures.
787 Thanks to Hans Olav Eggestad <olav@jordforsk.nlh.no> and others
790 * DATA LIST FREE and DATA LIST LIST parsing of input files is now
791 matches the documented behavior exactly, and error messages are
792 more helpful. Thanks to Mark H. Wood <mwood@IUPUI.Edu>.
794 Version 0.2.0 changes since 0.1.0:
796 Procedures now implemented:
797 * CROSSTABS. Please see documentation for caveats.
799 Transformations and utilities now implemented:
802 * CLEAR TRANSFORMATIONS
803 * DISPLAY (all subcommands).
814 Support for input and output through pipes: "|command" and
815 "command|" filenames; support for special filenames "-", "stdin",
818 New command-line features:
819 * New option --testing-mode: Invoke heuristics to assist testing.
820 * New option --safer, -s: Don't allow certain unsafe operations.
821 * New option --command=CMD, -c CMD: Perform literal command CMD.
822 * rc file ~/.pspp/rc is executed before any other files.
823 * Now multiple syntax files can be specified.
825 Operator LAG is now implemented.
827 Added missing FILE subcommand to REREAD.
829 Table output manager completely rewritten.
831 Device configuration file syntax changed. You will need to
832 reinstall your `devices' file.
834 New output driver for HTML.
836 PostScript driver and prologue simplified.
838 Many bugs fixed. General source-code cleanup.
840 Added Texinfo documentation for:
841 * PSPP system file format
842 * PSPP portable file format
843 * How to write input for q2c parser generator
846 PSPP language is now fully documented. Please report any
847 inaccuracies or omissions in the documentation.
849 Changes for version 0.1.0:
851 First public release. For changes from unreleased development
852 versions, please see ONEWS.
854 ----------------------------------------------------------------------
855 Copyright information:
857 Permission is granted to anyone to make or distribute verbatim
858 copies of this document as received, in any medium, provided that
859 the copyright notice and this permission notice are preserved, thus
860 giving the recipient permission to redistribute in turn.
862 Permission is granted to distribute modified versions of this
863 document, or of portions of it, under the above conditions,
864 provided also that they carry prominent notices stating who last
868 version-control: never