Use the File > Export image... command to export the current graph as an image file.
Enter the number of pixels for the width and height of the image, as well as the file name. Use the ... browse button to open a file selection dialog box. The selection dialog contains a file filter for all supported file formats.
Use this function if you want to include the diagram in another program for documentation purposes, such as in Microsoft Word or PowerPoint. Or edit the image file with any drawing program if you want to mark or label any specific parts of the graph.
As opposed to a simple screenshot, this function has the advantage that you always receive a defined image size.