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The Edit Tech Params Button: Edit Layer Keywords
The Edit Tech Params button in the Attributes Menu brings
up the Layer Parameter Editor. With the editor, several of the
technology file keywords associated with layers can have their
specifications added, deleted, or edited. After modification, the
Save Tech button in the Attributes Menu can be used to
generate a new technology file that incorporates the changes.
The editor is similar to the keyword editors found in the Convert
Menu and Extract Menu, and the rule editor found in the DRC Menu. When the editor first appears, the keyword specifications
for the current layer are listed. The specifications appear as they
would in the technology file. Changing the current layer will update
the listing to the parameters for the new current layer. The user can
add new lines or modify existing lines as desired.
To add a specification, select the desired keyword in the Keywords menu of the editor. The user will then be asked to enter
the associated text on the prompt line.
Clicking on a line in the listing will select the line. The text for
the selected line can be edited, or the line deleted, with the Edit and Delete buttons in the editor's Edit menu. The
Edit menu also contains an Undo button, allowing the last
operation to be undone.
The keywords that can be manipulated with the Layer Parameter
Editor are listed below, along with the specification syntax.
-
- LongName longname
This will set (or reset) the long name field of the current layer. If
no non-space characters are found after the keyword, the statement is
ignored. Leading and training white space is removed from the
argument.
- Description description_string
This will set the description field of the current layer. If no
non-space characters are found after the keyword, the statement is
ignored. Leading and training white space is removed from the
description string.
- Symbolic
If this keyword, which can be applied to physical layers only, is
present in a layer block, the layer will not be included in the cross
section displays produced with the Cross Section command (in the
View Menu).
- NoMerge
If this keyword, which can be applied to physical layers only, is
present in a layer block, the automatic merging of objects will be
suppressed on the layer. This overrides any merging enabled by the
Clip and merge overlapping boxes button in the Set Import
Parameters panel, and the Merge Boxes, Polys button in the Edit Menu, and the corresponding variables.
- Invisible
Layers with this keyword will by default be invisible. The actual
visibility status can be changed from the layer table. When a new
technology file is generated with the Save Tech button in the
Attributes Menu, the Invisible keyword will be applied
only to layers with the Invisible keyword set, whether or not
the layer is currently visible.
- CrossThick thickness
This keyword, which can be applied to physical layers only, sets the
layer thickness as rendered in the Cross Section command in the
View Menu. The thickness is given in microns.
- CrossField dark | clear
This sets the layer polarity assumed in the Cross Section
command. If set to ``dark'', then inverse polarity (dark field)
will be used in the cross section display, which is appropriate for
via layers, where the colored areas in the normal layout display
actually represent a hole through the insulator.
If the CrossThick or CrossField keywords are not set, in
Xic, the Cross Section command will obtain values from the
extraction system. These are overridden by the CrossThick and
CrossField keywords, if set. In XicII and Xiv, the
extraction system is not available.
Next: The Main Window Button:
Up: The Attributes Menu: Set
Previous: The Edit Layers Button:
Contents
Index
Stephen R. Whiteley
2012-04-01