Format - Area - Transparency will do, if it's shapes and groups of
shapes you are talking about.
If it's an image like a .jpg you want to make transparent, that may be
harder. I would ask Mr Google.
On 01/10/17 22:43, Bryan Kilgallin (iiNet) via linux wrote:
> I have been asked to overlay one chart atop another. But I am
> unfamiliar with this software. How can I make a background image
> visible through a foreground one?