set_layer_opacity

set_layer_opacity 
-lpp {s_layerlpp …} 
-opacity i_opacity | -lpp_and_opacity {{s_layerlpp i_opacity} …}] 
[ -window_id i_windowID]

Sets the o pacity for layer purposes and objects. Multiple objects may be specified with a single opacity or with an opacity for each object.

`-lpp` {s_layerlpp …}	Specifies the list of layer names, layer purposes, and objects to assign the color to. Layer purposes are represented as strings in the following format layer`:`layer purpose. For example, `"met3:blockage"` Objects are similarly represented. If you specify a layer name, all layer purposes in the layer are set.
`-opacity` i_opacity	Specifies the opacity to assign to each layer purpose or object listed in the layer_list. Valid values are 0 (transparent) through 255 (most opaque).
`-lpp_and_opacity` {{s_layerlpp i_opacity} …}
	Specifies a list of layer names, layer purposes, and/or objects with their opacity settings.
`-window_id` i_windowID	Specifies the identifier of the window to operate on. If this argument is not specified, the active window is used.

The following example assigns an opacity of 200 to all met2 layer purposes, and met1 layer purposes blockage, wire:pin and wire:detail.

set_layer_opacity -lpp { "met1:blockage" "met1:wire:pin" "met1:wire:detail" "met2"} -opacity 90

The following example assigns all met2 layer purposes an opacity of 60, and met1:wire:detail layer purposes an opacity of 209.

set_layer_opacity -lpp_and_opacity { "met2 60" "met1:wire:detail 209" }