AT&T UNIX™PC Unix System V Users Manual - tenox

LAYERS (l) LAYERS (l)
command relogin(lM) when the first layer is created. relogin(lM) will
reassign that layer as the user's logged-in terminal. An alternative layer
can be designated by using relogin(lM) directly. layers will restore the
original assignment on termination.
Layers are created, deleted, reshaped, and otherwise manipulated in a
terminal-dependent manner. For instance, the AT&T Teletype 5620 DMD
terminal provides a mouse-activated pop-up menu of layer operations. � ,
The method of ending a layers session is also defmed by the terminal.
If a user wishes to take advantage of a terminal-specific application
software package, the environment variable DMD should be set to the
pathname of the directory where the package was installed. Otherwise
DMD should not be set.
EXAMPLE
layers -f startup
NOTES
where startup contains
8 8 700 200 date ; pwd ; exec $SHELL
8 300 780 850 exec $SHELL
The xt(7) driver supports an alternate data transmission scheme known as
ENCODING MODE. This mode makes layers operation possible even over
data links which intercept control characters or do not transmit 8-bit
characters. ENCODING MODE is selected either by setting a configuration
option on your windowing terminal or by setting the environment
variable DMDLOAD to the value hex before running layers:
export DMDLOAD ; DMDLOAD=hex
If, after executing layers -f file, the terminal does not respond in one or
more of the layers, often the last command in the command-list for that
layer did not invoke a shell.
WARNING
To access this version of layers, make sure /usrlbin appears before any
other directory, such as $DMD!bin, you have in your path that contains a
layers program. (For information about defming the shell environmental
variable PATH in your .profile, see profile(4)) Otherwise, if there is a
terminal-dependent version of layers, you may get it instead of the
correct one.
FILES
When invoking layers with the -s, -t, -d, or -p options, it is best to
redirect standard error to another file to save the statistics and tracing
output (e.g., layers -s 2>stats); otherwise all or some of the output may
be lost
/dev/xt??[0-7]
/usr/lib/layersys/lsys.B ;7 ;3
$DMD/libllayersys/lsys.8 ;?;?
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