LYOF                                                               Menu: STTUS
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Deactivates all layers or a specified layer.

         1.  (NUM) layer number to set off (1-255), <ENTER> for all

Description
This command deactivates a single specified layer of your model, or
all the layers. The default is "all layers on," and this state
will remain until you turn off some or all layers.

To set a specific layer off, type the layer number. You may specify
more than one layer by typing a series of numbers with spaces between
them. You may continue to specify layers until you select another
command. To set all layers off, press <ENTER>.

Note that the currently active layer cannot be set to "off" by specifying
it's layer number but will be set to "off" if you press <ENTER> to set all
layers off.

The entities in the deactivated layers will be removed from the screen
only after the next redraw operation (e.g., \refr).

This command is commonly used in combination with the \lyon command.  You may
choose to deactivate all layers first and then activate only the desired
layers, when there are fewer layers to activate than to deactivate.

Example
\lyof 1 4
\refr

Result:Layers 1 and 4 are deactivated and disappear from the display.
