[NTG-context] Type-setting filenames

Hello, Can anyone suggest a good way of type-setting filenames in ConTeXt? They are usually long with few spaces and so often overhang the right-hand margin and even fall off the edge of the page. They also often include backslashes and underscores which I have to manually change - very tedious. Is there, for example, a command which handles some or all of my problems? Thanks Richard