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		      TeX DVI Previewer for Apollo Domain

			      Leonard N. Zubkoff

			 edsel!lnz@labrea.stanford.edu
			      LUCID, Incorporated
				  9 June 1988


DVIAPOLLO is based on the DVISUNTOOL and XDVI programs maintained by Tim
Freeman at CMU; it was ported to the Apollo system by Leonard N. Zubkoff.

To invoke DVIAPOLLO, type "dviapollo <dvifilename> [pagenumber]", where ".dvi"
will be automatically appended to the DVI file name if you don't provide it.
By default, DVIAPOLLO displays each page centered in the window so that the
text of the page is visible, but headers and trailers are usually not visible.
Movement around the document is provided via the following command keystrokes:

EXIT			Terminate DVIAPOLLO.
NEXT_WIN		Without an argument, recenter the window on the
			document.  With an argument, go to page <argument>.
UP_BOX_ARROW		Without an argument, go to the previous page.
			With an argument, go back <argument> pages.
DOWN_BOX_ARROW		Without an argument, go to the next page.
			With an argument, go forward <argument> pages.
UP_ARROW		Display the top area of the page.
DOWN_ARROW		Display the bottom area of the page.
LEFT_ARROW		Display the left area of the page.
RIGHT_ARROW		Display the right area of the page.
SHIFT_UP_BOX_ARROW	Go to the beginning of the document.
SHIFT_DOWN_BOX_ARROW	Go to the end of the document.
0,1,2,3,4,5,6,7,8,9	Digits accumulate an argument for the next command
			keystroke typed.  For example, to go to page 10,
			type 1 0 NEXT_WIN.

DVIAPOLLO automatically chooses an origin for each page so that the central
portion of the page is visible; the arrow keys may be used to see portions of
the page not displayed by default.  The top margin is a fixed constant in the
program, to compensate for page headers; the left margin is automatically
chosen based on the leftmost character or rule on the page.

DVIAPOLLO requires preview fonts in Augmented Apollo Font (AAF) format located
in a directory accessible as "/tex/fonts/aaf118".  Augmented Apollo Font format
is a normal Apollo Font file to which has been appended the TFM widths and
magnification information from a PXL file.  The AAF files are created from
PXL118 files by using the PXL2APOLLO program, which is provided along with
DVIAPOLLO.  PXL118 fonts are constructed using MetaFont, GFtoPK, and PKtoPX.
DVIAPOLLO uses AAF118 fonts because text display on the Apollo is highly
optimized for use with Apollo Font files; using PXL118 fonts directly with the
previewer would slow it down substantially.