You can select on the toolbox that appears when you select the MaskPaint node, like this:
- multistroke.jpg (20.38 KiB) Viewed 17234 times
- stroke.jpg (17.75 KiB) Viewed 17234 times
Sander is right about the default behaviour of the Stroke option.
Just keep in mind that:
- Stroke is more flexible, but is a heavier tool.
- Multistroke is lighter but less flexible.
The complexity of the tool, however, should only be a concern in projects with hundreds of strokes or more. Or if you are running Fusion in a computer with limited resources.
In terms of flexibility, if you need to access or edit individual strokes, the Stroke tool is your choice.
If you want to make a quick mask paint and don't want to alter ou access any data of it later, go to Multistroke (but you will have to set the duration of the brush strokes to cover all your comp)