Scale image. Scales a layer source image by factor relative to the full-resolution image.
Scale factor (real, greater than 0.0).
No scaling is applied when scale=1. factor smaller than 1.0 down-scales and larger than 1.0 enlarges the source image.
Source image/mask attribute. Ignored if size= is specified as well for the current layer. Overrides res=. Applies to layer 0 if specified for layer=comp. Ignored if the layer is not associated with an image or mask.
If not specified, res= is used. If res= is not specified, the image is used without scaling.