NCSA Mosaic for the X Window System User's Guide

## Viewing Area

Below the Document URL field is the Viewing Area, which displays the contents of the current document file. Remember that highlighted or underlined words or images within the viewing area are hyperlinks to other files. Use the scroll bar on the right side of the viewing area to move through the file contents.

Some hyperlinks open in separate windows because they depend on external viewers to display the file contents. This is generally true for movies and for some graphics. To alert you that this is the case, NCSA Mosaic displays the message ``Spawning external viewer'' in the information line at the bottom of the window.

If NCSA Mosaic attempts to spawn an external viewer that is not installed, an error message may be displayed on the console (xterm) from which NCSA Mosaic was executed. NCSA Mosaic may ask you to enter a filename to save the current ``unidentifiable'' document.