You may include as many icons in one icon file as you like. All the icons will be displayed in the icon formats list, a toolbar docked at the right of the software's window.
Click an icon in the list, it will be focused and brought in the grid editor window.
You may click the up and down button at the top to move the focused icon up or down to change its order in the list.
You may click the black triangle arrow to scroll the view of the list to show those icons out of the view.
You may check or uncheck the menu item "View > Icon Formats List" to show or hide the icon formats list.
You may click the menu item "Edit > Add Format..." or "Edit > Delete Format" to add a new format to the icons list or delete the focused icon from the icons list.
