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opentab
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1991-11-22
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9.3 OPEN TABLET
The OPEN TABLET command is used to initialise a digitising tablet and an
associated tablet menu if required.
When the tablet is initialised, you specify whether you want the whole of
the tablet area to be made available for digitising, or if regions of the
tablet will become tablet menu areas with a smaller digitising area left in
the centre of the tablet.
Digitising tablets are useful for digitising or copying existing drawings.
The greater resolution of a tablet allows an accurate copy of a drawing to
be made by digitising points on the drawing with the pen or puck.
When a digitising tablet is running, all locations entered are only inter-
preted by IDENTS to be locations for what ever command is active. The pen or
puck on a digitising tablet cannot be used to select options from screen
menus or any gadgets on the screen. However, a digitising tablet does not
disable the mouse, so command and command options selection can still be
done from screen menus by using the mouse.
Selection of commands from screen menus or automenus can be totally dis-
abled if the digitising tablet is activated with a tablet menu. This allows
you to have many more predefined commands available than would fit on a
screen menu. Also as key areas on a tablet menu may contain any command
string, complex command sequences can be selected with one action as
opposed to several actions when automenus are used.
MODIFIERS
CHERRY Used to select the Cherry tablet. If the TABLETMENU
modifier is not used, the whole of the tablet can be used
as a digitising area. The available area is 384 by 240
millimetres with a resolution of .1 of a millimetre.
.PEN This modifier is used to select the input device for the
tablet. One of two keywords can be entered:
STYLUS To select the stylus.
PUCK To select the puck.
The default device selected is the puck.
When the stylus is selected, pressing the stylus has the
same effect as pressing the left button on the mouse.
With the puck in operation, the top two buttons coloured
green and red have the same effect as the two buttons on
the mouse. The bottom two buttons coloured yellow and
blue have the same effect as typing a colon (yellow) and
a return (blue).
.TABLETMENU Specifies that areas of the tablet will be used as a
tablet menu. The modifier should be followed by the name
of a tablet menu compiled with the COMPTAB command. ( See
documentation for COMPTAB ).
The tablet area should be configured to suit the tablet
menu required using the modifiers described below. The
default tablet menu configuration is a key size of 16
millimetres with menu strips along the left and right
sides of the tablet each 4 keys wide plus a menu strip
along the top of the tablet 8 keys wide. This gives a
total of 272 keys.
..KEYSIZE The menu key square size in millimetres.
..LEFT The number of keys defining the left border of the menu
area.
..RIGHT The number of keys defining the right border of the menu
area.
..TOP The number of keys defining the top border of the menu
area.
If the tablet area is configured using the LEFT, RIGHT
and TOP modifiers, a value of zero should be entered to
disable a border if this is required.
SUMMAGRAPHICS Used to select a SummaGraphics tablet. The modifier is
followed by one of three keywords used to identify the
model of SummaGraphics tablet to be used:
MM1812 Select the MM1812 tablet. This has an
available area of 457 by 304 millimetres.
MM1201 Select the MM1201 tablet. This has an
available area of 297 by 297 millimetres.
MM961 Select the MM961 tablet. This has an
available area of 152 by 228 millimetres.
If the pen or puck is used for any of the MM tablets,
buttons 1 and 2 have the same effect as the left and right
buttons on the mouse. If the puck is used, button 3 has the
same effect as typing a colon, and button 4 has the same
effect as typing return.
If the TABLETMENU modifier is not used, the whole of the
tablet can be used as a digitising area. The available area
is dependent on the tablet model with a resolution of .1 of
a millimetre.
.TABLETMENU Specifies that areas of the tablet will be used as a
tablet menu. The modifier should be followed by the name
of a tablet menu compiled with the COMPTAB command. ( See
documentation for COMPTAB ).
The tablet area should be configured to suit the tablet
menu required using the modifiers described below.
..KEYSIZE The menu key square size in millimetres.
..LEFT The number of keys defining the left border of the menu
area.
..RIGHT The number of keys defining the right border of the menu
area.
..TOP The number of keys defining the top border of the menu
area.
If the tablet area is configured using the LEFT, RIGHT
and TOP modifiers, a value of zero should be entered to
disable a border if this is required.