NAME
helpviewer - OpenWindows viewer for on-line help handbooks
SYNOPSIS
helpviewer -f help-handbook-file
DESCRIPTION
helpviewer is an OpenWindows application for viewing and
navigating on-line help handbooks.
helpviewer lets you page through a help handbook, magnify or
reduce pages, and follow hypertext links and table-of-
contents entries within a handbook and to other handbooks.
Because help handbooks are in PostScript format, they may
contain high quality fonts and graphics.
You should not start helpviewer directly. It is started
automatically by OpenWindows when you click SELECT on the
"More" button in a spot help window, or when you select the
"Help..." item in the OpenWindows root menu.
OPTIONS
helpviewer accepts most of the generic tool arguments
described in xview(7), as well as the following options:
-f help-handbook-file
Specify the name of the help handbook to be viewed.
This file name should be specified relative to a direc-
tory in $HELPPATH (see ENVIRONMENT below).
USAGE
Once a help handbook is displayed in the helpviewer window,
you can view it as follows:
Page Turning
Click SELECT on the left and right arrow buttons at the
top of the helpviewer window to page back and forth
through a handbook. The PgUp and PgDn keys on the key-
board perform the same functions. In addition, the
Home and End keys let you page through a handbook one
chapter at a time.
Page History
helpviewer keeps track of each page visited. Click
SELECT on the Go Back button until the window returns
to the page you want to revisit, or use the Undo key-
board function.
Hypertext Links
helpviewer has a simple hypertext mechanism. Hypertext
links are displayed as rectangular outlines around
words or graphics on a page. Double-clicking SELECT on
a link causes helpviewer to display the handbook and
page to which the link points. Handbooks may have
links to other handbooks. Certain types of hypertext
links can also initiate system processes. Double-
clicking on these links will start up a program or
shell script.
Page Magnification
Magnify or reduce the size of the handbook by pulling
the resize corners on the helpviewer window, or select
the "View->Custom Magnification" menu item. Select the
"View->Standard Magnification" menu item to reset the
handbook to the standard size. For very high magnifi-
cations, select the "View->Partial Page" menu item so
that the helpviewer window still fits on the screen.
ENVIRONMENT
HELPPATH
This environment variable must be set to the direc-
tories that contain help handbooks (e.g.
$OPENWINHOME/lib/locale:$OPENWINHOME/lib/help). The
helpviewer uses the $HELPPATH variable to locate hand-
book files. $HELPPATH is typically set automatically
during the OpenWindows startup process, so it is not
usually necessary to set it yourself.
SEE ALSO
helpopen(1)
DIAGNOSTICS
helpviewer(1) displays PostScript error messages in the con-
sole.
NOTES
PostScript is a trademark of Adobe Systems Incorporated.
The OpenWindows environment may no longer be supported in a
future release. You may want to migrate to CDE, the Common
Desktop Environment.
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