<DELETEBLOCKAGE 
"DELETE BLOCKAGE

Removes wiring blockage in a specified area.


Syntax

D*ELETE BL*OCKAGE 
[ALL] [L*AYER layername | TOP*LAYER T_layername 
| BOT*TOMLAYER B_layername | pt | area pt1 pt2]...;


Arguments

ALL
Deletes all blockages you specified with the ADD BLOCKAGE command.

layername
Name of the layer where you want to delete a blockage.

B_layername, T_layername
These two arguments must be used together. B_layername is the name of a layer below the layer specified by T_layername. T_layername is the name of a layer above the layer specified by B_layername. You can specify these names to add blockage on all layers from T_layername to B_layername inclusive. 

pt
Any point within a rectangular area of blockage.

pt1, pt2
A pair of diagonal points of a rectangle defining the area of blockage to delete.


Description

You can use the DELETE BLOCKAGE command to remove blockage areas from a layer or several layers of your design.

To delete an area of blockage, you must specify a point within the area. You can do this either by entering the point's coordinates at the command prompt or clicking a point using the mouse.

If the point is on a removable blockage, the blockage is immediately deleted. If there is no blockage on the specified layer or if the blockage is predefined and loaded from LEF, an error message is issued.

To remove several areas of blockage, specify a rectangular bounding area by entering the coordinates of two diagonal points of that bounding area. You can also select the points with the mouse. After you click on the first point, an expandable box appears with one corner anchored to the selected point and the opposite corner attached to the cursor. When you select the second point, all blockages within the bounding box are removed.


Environmental Variables

There are no environmental variables associated with this command.


Example

DELETE BLOCKAGE BOT M1 TOP M3 (500 500) ;


Related Command

The ADD BLOCKAGE command enables you to create an area of wiring blockage in your design.
"

	<Type QHELP>
	<Header "Delete Blockage Command Help">
<beginAutoGen "** Do not edit from here to the endAutoGen tag **" >
	<Tag DeleteBlockage
		<Toolname gsEnsemble>
		<Version 5.0>
		<Title "Delete Blockage Form Help">
	>
<endAutoGen >
>
