We do not currently support undo on the Visual Vocal web portal (http://portal.visualvocal.com). That said, most operations you might initiate are not particularly destructive, especially as most of your content will probably be generated outside of the web portal. Renderings are made in third party CAD and modeling tools and you are probably copying and pasting text descriptions from other materials you already have. Thus, If you upload the wrong image, you can always upload a new one. If you enter the wrong text into a field, just re-paste it from the original source.
Like many modern web applications we make sure to save your work in the background. There are only a few places where you'll see a save button. They only occur when heavyweight server processes are corralled to create a new item such as a project or scene.
Here's a list of the save behaviors for the different properties that you will find across the web portal:
|PROPERTY||EDITABLE||REQUIRES SAVE||CREATED BY|
|PROJECT NAME||X||X||Project Owner|
|PROJECT DESCRIPTION||X||X||Project Owner|
|V|V NAME||X||X||Project Owner|
|V|V DESCRIPTION||X||X||Project Owner|
|SCENE MEDIA TYPE||X||Project Owner|
|SCENE DESCRIPTION||X||Project Owner|
|IMAGE H RESOLUTION||Server process|
|IMAGE V RESOLUTION||Server process|
|HOTSPOT DESCRIPTION||X||Project Owner|
|VARIATION DESCRIPTION||X||Project Owner|