fbuf: New data structure for buffered file I/O.

[pspp] / doc / files.texi

diff --git a/doc/files.texi b/doc/files.texi
index 6b3a78c75b6d6f5c0aa25943830d8320956f62b0..f0b56aaf22dd49d61389efd62c4a4dae8071dc37 100644 (file)
--- a/doc/files.texi
+++ b/doc/files.texi
@@ -1,3 +1,12 @@
+@c PSPP - a program for statistical analysis.
+@c Copyright (C) 2017 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 and Portable File IO
 @chapter System and Portable File I/O
 
@@ -370,7 +379,7 @@ GET DATA /TYPE=TXT
         [ENCODING='@var{encoding}']
         [/ARRANGEMENT=@{DELIMITED,FIXED@}]
         [/FIRSTCASE=@{@var{first_case}@}]
-        [/IMPORTCASE=@{ALL,FIRST @var{max_cases},PERCENT @var{percent}@}]
+        [/IMPORTCASES=...]
         @dots{}additional subcommands depending on ARRANGEMENT@dots{}
 @end display
 
@@ -398,19 +407,13 @@ line.  To skip lines at the beginning of an input file, set @subcmd{FIRSTCASE}
 to the number of the first line to read: 2 to skip the first line, 3
 to skip the first two lines, and so on.
 
-@subcmd{IMPORTCASE} can be used to limit the number of cases read from the
-input file.  With the default setting, ALL, all cases in the file are
-read.  Specify FIRST @var{max_cases} to read at most @var{max_cases} cases
-from the file.  Use @subcmd{PERCENT @var{percent}} to read only @var{percent}
-percent, approximately, of the cases contained in the file.  (The
-percentage is approximate, because there is no way to accurately count
-the number of cases in the file without reading the entire file.  The
-number of cases in some kinds of unusual files cannot be estimated;
-@pspp{} will read all cases in such files.)
+@subcmd{IMPORTCASES} is ignored, for compatibility.  Use @cmd{N OF
+CASES} to limit the number of cases read from a file (@pxref{N OF
+CASES}), or @cmd{SAMPLE} to obtain a random sample of cases
+(@pxref{SAMPLE}).
 
-@subcmd{FIRSTCASE} and @subcmd{IMPORTCASE} may be used with delimited and fixed-format
-data.  The remaining subcommands, which apply only to one of the two  file
-arrangements, are described below.
+The remaining subcommands apply only to one of the two file
+arrangements, described below.
 
 @menu
 * GET DATA /TYPE=TXT /ARRANGEMENT=DELIMITED::
@@ -942,7 +945,7 @@ XEXPORT
         /MAP
 @end display
 
-The @cmd{EXPORT} transformation writes the active dataset dictionary and
+The @cmd{XEXPORT} transformation writes the active dataset dictionary and
 data to a specified portable file.
 
 This transformation is a @pspp{} extension.