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Drawing and recording
Drawing
The pen button in the bar, or the right-click menu, opens a toolbar: pen, line, arrow, ellipse, rectangle, eraser, colours, width, undo, redo, clear and pin.
Keys while the toolbar is open: L line, A arrow, S stylus, R rectangle, E ellipse, C clear, digits for colours, Ctrl+Z undo, Escape closes. The eraser is a button in the toolbar and has no key. Drawings belong to a slide, are shared between windows and are kept in the browser.
---
drawings:
enabled: true
persist: true
presenterOnly: false
syncAll: true
---enabled can be false, or dev or build to allow drawing only while developing or only in the built deck. With persist: true, drawings made while slide-ng dev runs are saved as .slide-ng/drawings/<slide>.svg, and builds show those files. syncAll: false keeps viewers' drawings on their own screen. See Drawing.
Camera and recording
record: true adds a camera button and a record button to the bar, plus camera, microphone and screen options to the settings. The default is dev, so only while developing. false and build also work.
The camera is a round, draggable picture over the slides. Recording uses the browser's recorder, and a .webm file is downloaded when you stop. Pause and resume work. Screen recording asks which tab or screen to share.
The presenter page has a Screen Mirror switch that shows a shared window instead of the slide.