Figure 1 and the rest of the Survey Results, as well as information on
Glenn Research Center Facilities, are not available here. If you want this
material, see
How to get the Handbook. The Space Mechanisms Lessons Learned Study
is available on the Reference Guide included with the CD.
Frames complicate the hypertext environment slightly. Frames are a method by
which the web author can instruct the web browser to split the browser window
into two or more rectangular sections. The web browser can then display
different documents in each section, simultaneously. For example, this document
uses two windows. The main window stores the text, figures, and tables of the
document. There is also a second window that stores a complete table of
contents, so that the user always has access to all parts of the document. The
user can read a section, then select a link in the table of contents and have a
different page of the document displayed in the main window while keeping the
table of contents in the other window. This is just an easy way to afford the
user constant access to the table of contents, which serves as a launching point
for the rest of the document.
Although the continuous availability of the table of contents should be
convenient to users, it also presents a problem, because most web browsers do
not handle multiple windows elegantly. To switch from the text to contents, you
may need to switch windows. You can do thios (in the MS Windows operating
system) from the taskbar at the bottom of your screen.
This document does not contain an index. This is because the electronic
hypertext environment has an even more powerful mechanism for referring the user
to occurrences of keywords. The user can perform a "Find" to search for every
instance of any word or phrase. Thus users will not meet with frustration at
finding that a concept is not listed in the index; the index is inherent to the
document.
To perform such a search, return to viewing the document and select
"Find" from your browser's commands. (It is typically listed on a
button at the top of the browser window, or in a menu or type
<Ctrl><F>.) Type in whatever text you would like to find,
and the browser will search for the text in the current document.