Docs on Turn off view resetting on new representations

docs/viewer-state.md

@@ -117,4 +117,16 @@ plugin.managers.camera.focusLoci(loci); // loci: Loci
 Restore the default camera position by:
 ```ts
 plugin.managers.camera.reset();
-```
+```
+
+### Turn off view resetting on new representations
+A new representation via something like
+```ts
+.apply(StateTransforms.Representation.VolumeRepresentation3D, ...)
+```
+can reset the view to make the whole representation visible.
+When one wants to keep the view the same instead of having the rep reset the view,
+keep the view constant by:
+```ts
+plugin.canvas3d?.setProps({ camera: { manualReset: true } });
+```