From 49aaf665f7ad1fed25d23b6ccb0da1c5461c4846 Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@cs.stanford.edu>
Date: Mon, 22 Aug 2022 09:37:09 -0700
Subject: [PATCH] docs

---
 doc/statistics.texi | 34 +++++++++++++++++++++++++++-------
 1 file changed, 27 insertions(+), 7 deletions(-)

diff --git a/doc/statistics.texi b/doc/statistics.texi
index 473e57aeb2..30e0b3dd03 100644
--- a/doc/statistics.texi
+++ b/doc/statistics.texi
@@ -1738,14 +1738,34 @@ or @code{OTHERNM}.
     [@t{CORNER=}@i{string}@dots{}]
 @end display
 
-@c TODO Describe substitution variables
-
 The @code{TITLES} subcommand sets the title, caption, and corner text
-for the table output for the previous @code{TABLE} subcommand.  The
-title appears above the table, the caption below the table, and the
-corner text appears in the table's upper left corner.  By default, the
-title is ``Custom Tables'' and the caption and corner text are empty.
-With some table output styles, the corner text is not displayed.
+for the table output for the previous @code{TABLE} subcommand.  Any
+number of strings may be specified for each kind of text, with each
+string appearing on a separate line in the output.  The title appears
+above the table, the caption below the table, and the corner text
+appears in the table's upper left corner.  By default, the title is
+``Custom Tables'' and the caption and corner text are empty.  With
+some table output styles, the corner text is not displayed.
+
+The strings provided in this subcommand may contain the following
+macro-like keywords that @pspp{} substitutes at the time that it runs
+the command:
+
+@table @code @c (
+@item )DATE
+The current date, e.g.@: MM/DD/YY.  The format is locale-dependent.
+
+@c (
+@item )TIME
+The current time, e.g.@: HH:MM:SS.  The format is locale-dependent.
+
+@c (
+@item )TABLE
+The expression specified on the @code{TABLE} command.  Summary
+and measurement level specifications are omitted, and variable labels are used in place of variable names.
+@end table
+
+@c TODO example
 
 @node CTABLES Table Formatting
 @subsection Table Formatting
-- 
2.30.2