Use drag and drop to refer to the action of dragging content from one location and dropping it in another location. You can often drag a file from a folder on your computer and then drop it into a message to attach it.

The drag and drop action is common and users understand it. Do not rephrase to use move or drag on its own because this can change the meaning and does not describe the complete action. To complete the action, you need to drop the content you are dragging into the appropriate location.