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-rw-r--r--doc/api/signals.texi5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/api/signals.texi b/doc/api/signals.texi
index a4e2c01..9f674e1 100644
--- a/doc/api/signals.texi
+++ b/doc/api/signals.texi
@@ -191,6 +191,11 @@ Create a new signal that takes on the value of @var{signal} every
Create a new signal that emits @var{step} every @var{step} ticks.
@end deffn
+@deffn {Scheme Procedure} signal-timer [@var{step}]
+Create a new signal that emits the total time elapsed since its
+creation every @var{step} (1 by default) ticks.
+@end deffn
+
@deffn {Scheme Procedure} signal-since @var{step} @var{signal}
Create a new signal that emits the time since @var{signal} was updated
ever @var{step} ticks.