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-rw-r--r--doc/lispref/os.texi9
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/lispref/os.texi b/doc/lispref/os.texi
index 3b63e08676c..88aed7a8bf3 100644
--- a/doc/lispref/os.texi
+++ b/doc/lispref/os.texi
@@ -1198,6 +1198,7 @@ return value is @code{nil}.
@node Time of Day
@section Time of Day
+@cindex time of day
This section explains how to determine the current time and time
zone.
@@ -1305,6 +1306,7 @@ time zone.
@node Time Conversion
@section Time Conversion
@cindex calendrical information
+@cindex time conversion
These functions convert time values (lists of two to four integers,
as explained in the previous section) into calendrical information and
@@ -1399,6 +1401,9 @@ on others, years as early as 1901 do work.
@node Time Parsing
@section Parsing and Formatting Times
+@cindex time parsing
+@cindex time formatting
+@cindex formatting time values
These functions convert time values to text in a string, and vice versa.
Time values are lists of two to four integers (@pxref{Time of Day}).
@@ -1631,6 +1636,9 @@ interactively, it prints the duration in the echo area.
@node Time Calculations
@section Time Calculations
+@cindex time calculations
+@cindex comparing time values
+@cindex calendrical computations
These functions perform calendrical computations using time values
(the kind of list that @code{current-time} returns).
@@ -1811,6 +1819,7 @@ cause anything special to happen.
@node Idle Timers
@section Idle Timers
+@cindex idle timers
Here is how to set up a timer that runs when Emacs is idle for a
certain length of time. Aside from how to set them up, idle timers