This sub-menu is used to open existing picture files for editing purposes. Pressing on this sub-menu will present the Open dialog box where you can select the picture file you wish to open. The Open dialog box is a standard Windows Common Dialog Box which has been added a number of additional options: 
Image Preview Box: In case the Preview checkbox is marked (default), a reduced picture of the file chosen will appear in the box when thumbing through the picture files. 
Preview Checkbox: When this box is marked (default), a preview of the file chosen when thumbing through the file list will appear in the Image Preview Box. 
Zoom Dropdown Box: With this box you can select the ratio of presentation of the Image Preview Box. The ratio is in percentage and in proportion to the size of the original picture. The Fit option (default) will best define the ratio of presentation enabling the most optimal view in the Image Preview. 
Preview Button: Pressing this button will open a new window where the selected file can be previewed. 
Animate Button: This button is used to preview picture files with more than a single frame.