Illustrator is a vector graphic editor that allows you to create beautiful graphics and illustrations. However, sometimes you may need to change the opacity of a layer in order to make it easier to see or edit the content. Here are some tips on how to change opacity in Illustrator:

  1. Open the layer in which you want to change the opacity.
  2. Choose an option from the Layer menu that will allow you to set the opacity of the layer at its default value or less.
  3. Click on the desired opacity value and then press OK.