.BG
.VE $Header: /usr3/s/current/s/.help/RCS/tek4105,v 1.1 84/05/30 08:34:27 rab Exp $
.FN tek4105
.TL
tek4105: Tektronix 4105 Color Scope
.CS
tek4105(ask)
.PP
.AG ask
logical, should device driver print the message "GO?"
to ask permission to clear the screen?
Default TRUE.
.PP
On `tek4105' scopes, graphics is drawn in a "graphics area" while
interaction with the computer is carried out in the "dialog area".
When not doing graphics, the terminal is placed in ANSI mode, which allows
it to be used with a screen editor.
.PP
Refer to the 4105 Operators Manual for a description of how to execute the
following "setup commands" which set non-default options:
DAENABLE yes; FLAGGING input; BYPASSCANCEL null.
.PP
If `ask' is TRUE,
whenever a new plot is about to be produced the message "GO?" appears
in the lower left corner of the screen.  This allows further viewing,
making a hard copy, etc., before the screen is erased.  When ready for
plotting to proceed, simply hit carriage return.
The function `hardcopy' can be used to generate a copy
of the information on the screen.
To produce unattended plots, use
the `hardcopy' function with the `ask=FALSE' to this device function.
.PP
When graphic input (`identify', `rdpen') is requested from this
terminal, the cursor lines appear horizontally and vertically across
the entire screen.  The thumb wheels should be adjusted to position
the intersection of the cursors at the desired point, and then any
single character should be typed.
A carriage return alone will terminate graphic input
without transmitting the point.
.PP
Colors 0 to 7 default to black, white, red, green, blue, cyan, magenta,
and yellow.
Area fills may be done with colors -7 to 0 (solid fill) or
1 to 16, 50 to 174 (patterned).
Character size, rotation, and line type may be changed.
Characters may appear in sizes 1, 2, or 3, with rotation
in multiples of 90 degrees.
There are 8 line types (1 through 8) giving solid, dotted, dot dash,
short dash, long dash, dash 3-dot, long dash dot, and dash space.
.PP
A device must be specified before any graphics functions can be used.
.SH WARNING 
This device driver has not been tested
and the accuracy of the above information is questionable.
This same device driver may work with a Tektronix 4107 terminal.
.KW device*
.WR
