- Accessing Files Using a URL:
  - Files may be accessed by a Uniform Resource Locator (URL)

        original: nM> plot http://nextmidas.com/nm/nxm/sys/dat/apenny.prm (currently unavailable)
        alternative: nM> plot /opt/midas/nxmlatest/nm/nxm/sys/dat/apenny.prm
        (where /opt/midas/nxmlatest is a softlink to your local nxm installation)

        <Plots the apenny.prm file off of a web server>

  - URLs are a WWW standard and as such are a very portable way to access files.
  - Requires that a web server is running on the remote system.
  - Warning: It is usually not a good idea to include a URL directory on your read AUX list.
    - If a URL directory is on the read AUX NeXtMidas will try to search it whenever looking for files.
    - Searching for files via a URL is usually problematic since it requires special configuration on the web server.
    - Searching for files via a URL can be slow compared to searching local directories.
  - Note: A few slides back it was pointed out that Blue files can be specified without an extension. This is where it causes major problems.
    - Requires multiple transactions with the web server to handle the fact that the file extension could be either `.prm` or `.tmp`.
    - It is very common for resources on servers to point to Perl scripts that may or may not have a file name extension.

Don't Make This Mistake:
Do not expect to find files in AUXes defined as URLs. The corresponding web server needs special configuration in order for this to work right.