.BG
.VE $Header: /usr3/s/current/s/.help/RCS/tek12,v 1.2 83/12/30 19:35:44 rab Exp $
.FN tek12
.FN tek10
.FN tek14
.FN tek14q
.TL
tek10  tek12  tek14  tek14q: Tektronix Storage Scope Devices
.CS
tek10(ask)
tek12(ask)
tek14(ask)
tek14q(ask)
.PP
.AG ask
logical, should device driver print the message "GO?"
to ask permission to clear the screen?
Default TRUE.
If `ask=\-1' is given, a hardcopy will be made of each frame prior
to clearing the screen, and no user interaction is necessary.
.PP
`tek10', `tek12', `tek14', and `tek14q' identify Tektronix storage scope
graphics devices.  
`tek10' is designed for upper-case only models (4006, 4010),
`tek12' for upper/lower case models such as 4012, while
`tek14' and `tek14q' are designed specifically to support 4014 models.
`tek14q' is somewhat quicker in its plotting than `tek14', at the cost
of slightly decreased resolution.
.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 automatically generate a copy
of the information on the screen.
To produce unattended plots, use
the `hardcopy' function with the `ask=FALSE' to these device functions.
.PP
When graphic input (`identify', `rdpen') is requested from these
terminals, 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 (may need carriage return on some
terminals).  A carriage return alone will terminate graphic input
without transmitting the point.
.PP
Only `tek14' and `tek14q' change character size and line type.
Character sizes are .9, 1, 1.5, and 1.6.  There are 5 line types (1
through 5) giving solid, dotted, dot dash, short dash, and long dash
lines.  Characters can not be rotated on these devices.
.PP
A device must be specified before any graphics functions can be used.
.KW device*
.WR
