transcript view: list button for touch devices
The 'r' keyboard shortcut is useless on mobile browsers, so the
transcript view can now also be toggled with a button next to the
speaker notes button (shown on coarse-pointer devices, like the
fullscreen and notes buttons, and highlighted while the transcript is
open).
Change-Id: I10909124850a5fba469a670115e87ef4f6c4376b
diff --git a/R/revealjs_presentation.R b/R/revealjs_presentation.R
index e73ede9..d28fcd8 100644
--- a/R/revealjs_presentation.R
+++ b/R/revealjs_presentation.R
@@ -40,11 +40,13 @@
#' useful for practicing a talk on a phone or tablet. It follows along as
#' you change slides and only appears if the deck contains notes at all.
#'
-#' Pressing `r` toggles a transcript view: a single scrollable page
-#' containing every slide's content and speaker notes. Text-to-speech
-#' ("read aloud") browser extensions cannot walk a reveal.js deck, since
-#' hidden slides are not part of the visible page text -- the transcript
-#' gives them something they can read from start to finish.
+#' Pressing `r` -- or, on touch devices, tapping the list button next to
+#' the speaker notes button -- toggles a transcript view: a single
+#' scrollable page containing every slide's content and speaker notes.
+#' Text-to-speech ("read aloud") browser extensions cannot walk a
+#' reveal.js deck, since hidden slides are not part of the visible page
+#' text -- the transcript gives them something they can read from start
+#' to finish.
#'
#' ## Slide timing
#'