Using the three buttons on the Definition tab in the file types configuration screen, you can quickly create or remove file associations to the current file type. The associations will be made with or removed from each of the extensions listed in the file type's file mask.
Windows itself determines file types by file name extension only. Therefore, associations will only be made with file masks in the style of *.ext. Other file masks are ignored when making Windows file associations.
If you click the button "Always "Open" this file type with EditPad", EditPad will associate itself with the "open" action. This means that whenever you double-click on a file of this type in Windows Explorer, it will be opened in EditPad.
If you click the button "Always "Edit" this file type with EditPad", EditPad will associate itself with the "edit" action. This means that you can then right-click on files of this type in Windows Explorer and select "Edit" from the context menu to open the file in EditPad. If you do this for HTML files, you will be able to view the source for any web page by clicking on the Edit button in the toolbar of Microsoft Internet Explorer.
If you click "Associate EditPad's green icon with this file type", then Windows Explorer will indicate files of this type with the green notebook icon that represents EditPad itself. You can use this button to make files that you edit exclusively with EditPad stand out in Windows Explorer or other file management applications. EditPad itself also uses the icon associated with a file type to indicate file types on tabs and file management side panels.
Click the button "Remove EditPad's association with this file type" to remove the associations made by clicking on one or more of the three previous buttons. Associations made in another way will not be removed.