Controls for touch displays & smartboards
Try the toolbar, bottom-left.
Tap to draw · tap again = next colour · once more = off
Long-press the pen = erase this slide
Marks stay put — leave this slide, come back, they are still here
The button shows the active colour. Marks live until you erase them or reload the page. Only the first touch draws — palms and extra fingers are ignored.
Tap the board for a white writing surface — the pen switches on by itself.
Tap again (or change slides) to close it.
Great for spontaneous sketches and collecting ideas.
Tap the magnifier, then a cell below — the surroundings dim, the context stays.
Tap again zooms in on it · drag moves the spotlight · a third tap resets.
| Run | Samples | Mean | SD | 95% CI | p |
|---|---|---|---|---|---|
| A-01 | 1 248 | 14.82 | 2.31 | 14.69–14.95 | 0.004 |
| A-02 | 1 194 | 15.07 | 2.44 | 14.93–15.21 | 0.011 |
| B-01 | 1 301 | 13.96 | 1.87 | 13.86–14.06 | <0.001 |
| B-02 | 1 276 | 14.11 | 1.92 | 14.00–14.22 | <0.001 |
| C-01 | 986 | 16.40 | 3.05 | 16.21–16.59 | 0.062 |
| C-02 | 1 020 | 16.28 | 2.98 | 16.10–16.46 | 0.058 |
A table is where this earns its keep: point at one row without hiding the rest.
Tap the timer to cycle 5 · 10 · 15 minutes — one more tap turns it off.
The countdown stays visible for the whole room and pulses red at 0:00.
It keeps running across slide changes — perfect for group work.
Pause blanks the screen · Overview shows all slides · Fullscreen
The toolbar fades out when idle and returns on movement.
On dark slides the buttons turn white.
Buttons, position, colours, timer steps, autohide — all optional.
See the README for all options.