Listing and Printing Overlay Files

Overlay files in use on are stored on disk in a directory called IRIS_OVERLAY. The product output process always looks for overlay files in that directory.

To see a list of the overlay files stored on your system, issue the following commands from the operating system prompt:

$ cd $IRIS_OVERLAY

$ ls

Overlays for many IRIS sites are included in the release in the IRIS_ROOT/config_template/overlay directory. Overlay defaults to the IRIS_OVERLAY directory, unless you specify a path in the file name.

The overlay directory should contain only overlay files. Do not use it to store any other kinds of file. In addition, Vaisala recommends that you follow these file naming conventions for any overlay files that you create:

• Use the .ovr suffix or file extension to denote overlays. The product output process uses only these files. The Overlay utility uses files with this extension by default. That is, if the file has the .ovr suffix, you do not need to type the suffix when you display it using Overlay.
• Use .xbm to denote bitmap overlay icons that are referenced within the overlay files.

Because overlays are ASCII files, you can print them on your system printer.