# Preview These files are a special class of Desk Accessory which reside in the `PREVIEW` subdirectory relative to `DESKTOP2` (next to `DESK.ACC`). These DAs will be invoked automatically for certain file types when File > Open is run or the files are double-clicked. * [show.text.file](show.text.file.s) * Handles text files (TXT $04) * [show.image.file](show.image.file.s) * Handles image files (FOT $08) * 8k Hires or 16k Double Hires images are supported The files can optionally be copied into the `DESK.ACC` directory to allow direct invocation from the Apple menu. This can be useful to preview files of different file types e.g. image files saved as BIN $06. See [API.md](../desk.acc/API.md) for programming details. See the DA [README.md](../desk.acc/README.md) for build and installation details.