If you drag an object over a connector, it may show two green boxes where it connects with other objects. This indicates that:

You can insert text fields within regular text.

Which are valid Visio 'Save as' image types?

Which are examples of external data sources?

How to edit text on a shape?

Shortcut for ungrouping shapes?

Which of these defines the relative front-to-back position of the shape of a drawing?

You added a container with no exclusions to a page. It looks like shapes are in the container, but when you move the container, the shapes do not move. How do you give the container and shapes a specific relationship?

You need to create a diagram showing many servers, switches, and other devices in a large corporate environment. Which diagram should you use?

Which is one of the template categories in the Visio Standard desktop app?

When a shape is rotated in Visio, what does it rotate around?