Would appreciate some advice on what is the best app to get for marking up images in Confluence server. We are looking to add a lot of instructional content within our space with images taken from different systems, marked up with arrows, text boxes, shapes etc, so need the ability to create content that consists of multiple layers (similar to what can be done in Powerpoint) but creatable and modifiable from within Confluence. I have been looking at Draw.io and Gliffy but the examples tend to show flowchart style diagrams. Is anyone able to offer any suggestions? Thanks!