X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=doc%2Fflow-control.texi;h=fe81c94357c42a1b5b1bd1c6c4927a0dffba6424;hb=refs%2Fheads%2Fcenter-titles;hp=892887e211f9cb5b9f68f4f79a562b7796b33d55;hpb=fe8dc2171009e90d2335f159d05f7e6660e24780;p=pspp

diff --git a/doc/flow-control.texi b/doc/flow-control.texi
index 892887e211..fe81c94357 100644
--- a/doc/flow-control.texi
+++ b/doc/flow-control.texi
@@ -1,3 +1,4 @@
+
 @node Conditionals and Looping
 @chapter Conditional and Looping Constructs
 @cindex conditionals
@@ -5,7 +6,7 @@
 @cindex flow of control
 @cindex control flow
 
-This chapter documents PSPP commands used for conditional execution,
+This chapter documents @pspp{} commands used for conditional execution,
 looping, and flow of control.
 
 @menu
@@ -107,16 +108,19 @@ strings, comments, unquoted strings (such as the text on the
 @cmd{TITLE} or @cmd{DOCUMENT} command), or inside @cmd{BEGIN
 DATA}@dots{}@cmd{END DATA}.
 
+Substitution occurs only on whole words, so that, for example, a dummy
+variable PRINT would not be substituted into the word PRINTOUT.
+
 New variable names used as replacements are not automatically created
 as variables, but only if used in the code block in a context that
 would create them, e.g.@: on a @cmd{NUMERIC} or @cmd{STRING} command
 or on the left side of a @cmd{COMPUTE} assignment.
 
-Any command may appear within DO REPEAT, including nested DO REPEAT
-commands.  If @cmd{INCLUDE} or @cmd{INSERT} appears within DO REPEAT,
+Any command may appear within @subcmd{DO REPEAT}, including nested @subcmd{DO REPEAT}
+commands.  If @cmd{INCLUDE} or @cmd{INSERT} appears within @subcmd{DO REPEAT},
 the substitutions do not apply to the included file.
 
-If PRINT is specified on @cmd{END REPEAT}, the commands after substitutions
+If @subcmd{PRINT} is specified on @cmd{END REPEAT}, the commands after substitutions
 are made are printed to the listing file, prefixed by a plus sign
 (@samp{+}).
 
@@ -125,31 +129,33 @@ are made are printed to the listing file, prefixed by a plus sign
 @vindex LOOP
 
 @display
-LOOP [index_var=start TO end [BY incr]] [IF condition].
+LOOP [@var{index_var}=@var{start} TO @var{end} [BY @var{incr}]] [IF @var{condition}].
         @dots{}
-END LOOP [IF condition].
+END LOOP [IF @var{condition}].
 @end display
 
 @cmd{LOOP} iterates a group of commands.  A number of
 termination options are offered.
 
 Specify index_var to make that variable count from one value to
-another by a particular increment.  index_var must be a pre-existing
-numeric variable.  start, end, and incr are numeric expressions
+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}.)  
 
-During the first iteration, index_var is set to the value of start.
-During each successive iteration, index_var is increased by the value of
-incr.  If end > start, then the loop terminates when index_var > end;
-otherwise it terminates when index_var < end.  If incr is not specified
+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 
+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.
 
-If end > start and incr < 0, or if end < start and incr > 0, then the
-loop is never executed.  index_var is nevertheless set to the value of
+If @var{end} > @var{start} and @var{incr} < 0, or if @var{end} < @var{start} and
+ @var{incr} > 0, then the
+loop is never executed.  @var{index_var} is nevertheless set to the value of
 start.
 
-Modifying index_var within the loop is allowed, but it has no effect on
-the value of index_var in the next iteration.
+Modifying @var{index_var} within the loop is allowed, but it has no effect on
+the value of @var{index_var} in the next iteration.
 
 Specify a boolean expression for the condition on @cmd{LOOP} to
 cause the loop to be executed only if the condition is true.  If the
@@ -168,7 +174,8 @@ 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 MXLOOPS (@pxref{SET}) times.
+present, then the loop is executed @var{max_loops} (@pxref{SET}) times.
+The default value of @var{max_loops} is 40.
 
 @cmd{BREAK} also terminates @cmd{LOOP} execution (@pxref{BREAK}).