spv: Run Python at build time via $PYTHON variable.

[pspp] / doc / flow-control.texi

diff --git a/doc/flow-control.texi b/doc/flow-control.texi
index fe81c94357c42a1b5b1bd1c6c4927a0dffba6424..a8e399f0f489c1a056a6f19fb107ad774f0161ae 100644 (file)
--- a/doc/flow-control.texi
+++ b/doc/flow-control.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 Conditionals and Looping
 @chapter Conditional and Looping Constructs
@@ -140,11 +149,11 @@ termination options are offered.
 Specify index_var to make that variable count from one value to
 another by a particular increment.  @var{index_var} must be a pre-existing
 numeric variable.  @var{start}, @var{end}, and @var{incr} are numeric expressions
-(@pxref{Expressions}.)  
+(@pxref{Expressions}.)
 
 During the first iteration, @var{index_var} is set to the value of @var{start}.
 During each successive iteration, @var{index_var} is increased by the value of
-@var{incr}.  If @var{end} > @var{start}, then the loop terminates 
+@var{incr}.  If @var{end} > @var{start}, then the loop terminates
 when @var{index_var} > @var{end};
 otherwise it terminates when @var{index_var} < @var{end}.  If @var{incr} is not specified
 then it defaults to +1 or -1 as appropriate.
@@ -173,8 +182,10 @@ code block is executed.  The condition is evaluated at the end of the
 loop, not at the beginning, so that the body of a loop with only a
 condition on @cmd{END LOOP} will always execute at least once.
 
-If neither the index clause nor either condition clause is
-present, then the loop is executed @var{max_loops} (@pxref{SET}) times.
+If the index clause is not
+present, then the loop is executed at most @var{max_loops} (@pxref{SET}) times
+(but possibly fewer, if a condition clause evaluates to false or if
+@cmd{BREAK} executes).
 The default value of @var{max_loops} is 40.
 
 @cmd{BREAK} also terminates @cmd{LOOP} execution (@pxref{BREAK}).