Documentation for saving SVGs is a bit unclear

[JD557]

Asked in Discord, but adding an issue to track this here.

The SVG documentation reads:

On the JVM you can't draw SVG to the screen. Use the java2d backend for that instead. However you can write SVG output in the usual way.

But there's no example. Since it mentions "in the usual way", the next logical step seems to be the "Writing to a File" docs, where the example looks like:

import doodle.core.*
import doodle.syntax.all.*
import doodle.java2d.*
import cats.effect.unsafe.implicits.global

import doodle.core.format.*

val circle = Picture.circle(100)
  .strokeWidth(10.0)
  .fillColor(Color.crimson)
  
circle.write[Png]("circle.png")

Intuitively, one would just change import doodle.java2d.* to import doodle.svg.* and circle.write[Svg]("circle.svg"). However, this triggers an error:

No given instance of type doodle.effect.DefaultFrame[Frame] was found for parameter f of method apply in class FileWriterOpsHelper

Which is not clear if:

• There's an import missing
• SVG exports require an explicit Frame

Maybe the documentation could have a bit more examples and the implicit not found message could be improved?