Make sure that you are in paper space. (On the status bar,
PAPER is on.)
ClickFormat
menu Layer.At the Command prompt, enter
layer.
In the Layer Properties Manager, select the layer or layers you
want to freeze or thaw.
In the Freeze column, click the icon to change a layer's state.
The sun icon means that a layer is thawed; the snowflake icon means
that a layer is frozen.