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TeX 1995 July
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TeX CD-ROM July 1995 (Disc 1)(Walnut Creek)(1995).ISO
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dvitovdu
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dvitovdu_online.hlp
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In response to the "Command:" prompt, you can enter one or more of the
following commands in upper or lowercase. Multiple commands are
processed in the order they appear but the window is only updated, if
necessary, at the end. E.g., if you type "NFD" then DVItoVDU will get
the Next page, switch to Full display mode, move the window Down, and
only then display the page. If an invalid command is detected, any
further commands are ignored. Most commands consist of only one or two
characters; some can be followed by parameters. Spaces before and after
commands and parameters are optional.
MISCELLANEOUS
~~~~~~~~~~~~~
? - List this help information.
S - Show the various qualifier values and statistics on the
number of fonts, characters and rules used in the
current page.
Q - Quit from DVItoVDU.
SELECTING A PAGE
~~~~~~~~~~~~~~~~
i - Display the ith DVI page; i must be a positive integer
from 1 to n where n is the total number of pages in the
DVI file.
[i0. ... .i9] Display the DVI page whose TeX page counters match the
given integers, i0 to i9, separated by periods. Any
number of integers may be absent; an absent integer will
match any value in the corresponding counter. Trailing
periods may be omitted. If more than one DVI page
matches, the lowest will be chosen.
N - Display the Next DVI page, depending on the current
direction.
> - The N command will move forwards through the DVI file.
< - The N command will move backwards through the DVI file.
CHANGING THE WAY A PAGE IS DISPLAYED
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The window region is updated in the following manner:
1. Visible paper edges are drawn first.
2. Visible rules are then shown in full, no matter what the display
mode.
3. Visible characters are finally font by font (in order of
increasing number of characters on the page).
At any stage, you can hit the RETURN key to abort the display, or change
the display mode by hitting the T, B or F keys (or t, b or f).
T - Terse display of characters; fast but inaccurate. The
characters from TeX text fonts should be readable, but
those from math fonts will be incorrectly represented.
B - Box display showing rectangular outlines of characters.
F - Full display of all pixels in characters; accurate but
slow.
CHANGING THE UNITS OF DIMENSIONS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The numbers shown in the second status line are all dimensions in terms
of the units shown at the end of the line. The parameters following
some commands are also dimensions in terms of these units. Unlike
dimensions in TeX, you don't explicitly type the units when you need to
specify a dimension to DVItoVDU; simply enter an integer value or real
value (which will be truncated to four decimal places if necessary). A
given value is rounded up internally to the nearest pixel based on the
current units and the conversion factors shown below.
IN - Get/show dimensions in terms of inches (the /RESOLUTION
qualifier has defined the number of pixels per inch).
CM - Get/show dimensions in terms of centimetres
(2.54cm=1in).
MM - Get/show dimensions in terms of millimetres (10mm=1cm).
PC - Get/show dimensions in terms of picas (1pc = 12pt).
PT - Get/show dimensions in terms of points (72.27pt = 1in).
PX - Get/show dimensions in terms of pixels.
CHANGING THE SIZE OF THE WINDOW
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The width and height of the window region can be changed at any time to
increase or decrease the area of page currently in view. The location
of the window will not change (unless the page becomes invisible). The
parameters wd and ht are dimensions ranging from 1 pixel to 480 inches.
Note that the width and height of the window are automatically set every
time a page is selected; their values will normally depend on the paper
dimensions.
H wd - Set the Horizontal size of the window to the given
width. If wd is absent, set window width to its
initial, unscaled value.
V ht - Set the Vertical size of the window to the given height.
If ht is absent, set window height to its initial,
unscaled value.
ZI - Zoom in by halving the current height and width of the
window.
ZO - Zoom out by doubling the current height and width of the
window.
MOVING THE WINDOW OVER A PAGE
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The window region can be moved to any position over the current page.
The W command provides absolute positioning; the U, D, L and R commands
provide relative positioning.
The parameters v and h are dimensions ranging from -480 inches to +480
inches. DVItoVDU uses a coordinate scheme in which the position (0,0)
is a point 1 inch in from the top and left edges of the imaginary sheet
of paper; vertical coordinates increase down the paper, horizontal
coordinates increase to the right.
You will be told if the window moves entirely outside the page edges
represented by Minh, Minv, Maxh, and Maxv. If this does happen, the
movement is restricted to just outside the edges to make it easier to
get back over the page using only the U, D, L and R commands.
Note that the location of the window is automatically set every time a
page is selected; this position will normally be (-1,-1) in inches;
i.e., the top left corner of the paper.
W h,v - Move the Window's top left corner to the given paper
position. h is the horizontal coordinate, v is the
vertical coordinate. If h and v are absent then the
window is moved to (Minh,Minv), the top left corner of
the page rectangle.
U v - Move window Up v units. If v is absent, move up an
amount equal to the window's current height.
D v - Move window Down v units. If v is absent, move down an
amount equal to the window's current height.
L h - Move window Left h units. If h absent, move left an
amount equal to the window's current width.
R h - Move window Right h units. If h absent, move right an
amount equal to the window's current width.