-
- MasterMenuLength
Value: integer 1-75.
This integer variable sets the length of the list of master cells
retained in the Cell Placement Control panel. The default is
25, which may not be fully visible for some screen resolutions.
This tracks the setting of the Maximum menu length entry in the
Cell Placement Control panel from the side menu.
- DevMenuStyle
Value: integer 0-2.
This variable tracks and sets the presentation style of the device
menu (described in 7.5) which is used in electrical mode.
There are three styles, selected by giving this property a value of 0,
1, or 2. The default menu, style 0, contains a menu bar with entries
for categories, such as Sources and Terminals. Style 1 is
similar, however the entries are alphabetic corresponding to the first
letter of the device name. Style 2 provides buttons marked with the
device schematic symbol. This style occupies the most screen space,
but may be more convenient for new users.
- LabelDefHeight
Value: real 0.01 - 10.0.
This sets the minimum label height, in microns, for new text labels.
The actual initial height may be larger, depending on the zoom factor
of the window, but it can not be smaller. The default if this
variable is not set is 1.0 micron.
This variable was named DefLabelHeight in releases prior to
4.2.14.
This variable tracks the Default minimum label height entry area
in the Labels page of the Window Attributes panel from the
Set Attributes button in the Attributes Menu.
- LabelMaxLen
Value: integer >= 6.
This variable sets the maximum width, in default-sized character
cells, of a displayed label. If the label exceeds this width, it is
not shown, and a small box at the text origin is shown instead. The
default is 256, so this is unlikely to be triggered unless the user
resets the value.
The ``hidden'' status of a label can be toggled by clicking the text
or box with button 1 with the Shift key held. See
7.9 for more information.
This variable was named MaxLabelLen in releases prior to
4.2.14.
This variable tracks the Maximum displayed label length entry
area in the Labels page of the Window Attributes panel
from the Set Attributes button in the Attributes Menu.
- LabelMaxLines
Value: integer >= 0.
Label text strings may have embedded newline characters which cause
them to be displayed on multiple lines. This variable, when set to a
positive integer value, provides a limit on the number of lines that
are actually displayed, in labels that respect this limit. Only the
first N lines would actually appear in the display, where N is given in this property. If N is zero, there is no limit.
Labels observe this limit only if an internal flag is set in the
label. Presently, this is set internally for the labels associated
with value and param properties. The user can apply the
limit to any label by setting the LIML flag in the XprpXform pseudo-property.
This variable was named MaxLabelLines in releases prior to
4.2.14.
This variable tracks the state of the Label optional displayed
line limit numerical entry in the Labels page of the Window Attributes panel from the Set Attributes button in the
Attributes Menu.
- LabelHiddenMode
Value: integer 0-3.
By default, all labels participate in a protocol whereby clicking on
the label with the Shift key held will ``hide'' the label,
displaying a small box instead. Shift-clicking on the box
will return to the display of the label text. This variable limits
the labels which will participate in this protocol.
| 0 |
All labels, the default, same as if not set. |
| 1 |
Only electrical-mode labels. |
| 2 |
Only electrical-mode bound property labels. |
| 3 |
No labels. |
This variable was named HiddenLabelMode in releases prior to
4.2.14.
This variable tracks the state of the Hidden label scope option
menu in the Labels page of the Window Attributes panel
from the Set Attributes button in the Attributes Menu.
In the 3.2 branch of Xic and earlier, the default was effectively
2.
- LogoEndStyle
Value: integer 0-2.
This sets the path end style used to render vector text in the logo command. The variable should be set to 0 for flush ends, 1 for
rounded ends or 2 for extended ends. If unset, extended ends are
used. This variable tracks the setting in the Logo Font Setup
panel in the logo command.
- LogoPathWidth
Value: integer 1-5.
This sets the relative path width used for rendering with the vector
font in the logo command. The variable should be set to an
integer 1-5, where 1 represents the smallest width, and increasing
values makes the rendering appear increasingly bold. This variable
tracks the setting in the Logo Font Setup panel in the logo command. If not set, a value of 3 is assumed.
- LogoAltFont
Value: integer 0-1.
When set to 0 (zero), the logo command will use an internal
bitmap font, and characters will be rendered as Manhattan polygons.
When set to 1, the logo command will use the system font named
in the LogoPrettyFont variable, or a default if this is not set.
Characters are rendered as Manhattan polygons derived from the font
bitmaps. When unset, or the value is not recognized, the logo
command will use the vector font, for rendering using wires. The
status of this variable tracks the check boxes in the Logo Font
Setup panel of the logo command.
- LogoPrettyFont
Value: font name string.
This variable sets the name of the ``pretty'' font to be used for text
rendering in the logo command. It is set by the font selection
panel produced from the Select Pretty Font button in the Logo Font Setup panel in the logo command.
Under Unix/Linux, in GTK1 releases this variable can be set to the X
font description name of an X font. In GTK2 releases, a Pango font
description string is expected. Under Windows, the variable is set to
a string in the form ``face_name pixel_height'' or the
deprecated form ``(pixel_height)face_name''.
Examples are ``Lucida Console 24'' or ``(24)Lucida
Console'', which is the default font.
- LogoPixelSize
Value: positive real number < =
100.0.
When this variable is set to a value, it represents the size in
microns of a ``pixel'' used in the logo command for new labels
and images. With the variable defined, the ``pixel'' size is fixed,
and can not be changed with the arrow keys from the logo
command. This variable is set from and tracks the Define
``pixel'' size check box and text entry area in the Logo Font
Setup panel.
- LogoToFile
Value: boolean.
If this variable is set, physical text created with the logo
command will be placed in a cell, which is instantiated at the label
locations. A native cell file containing the cell is written in the
current directory. If unset, the physical text is placed directly in
the current cell. The variable tracks the state of the check box in
the Logo Font Setup panel.
- NoConstrainRound
Value: boolean.
When this boolean is set, there is no checking for minimum feature
size of round objects as these objects are being created (they will
still be tested when completed if interactive DRC is enabled).
- RoundFlashSides
Value: integer 8-256, default 32.
This variable sets the number of sides per 360 degrees to use in round
objects in physical mode, as created with the round, donut
and arc side menu buttons, and corresponding script functions.
It can be set from the sides button in the physical side menu.
- ElecRoundFlashSides
Value: integer 8-256, default 32.
This variable sets the number of sides per 360 degrees to use in round
objects in electrical mode, as created with the arc button in
the menu produced by the shapes button in the electrical side
menu. It can be set from the sides button in the same menu.
- SpotSize
Value: real 0-1.0.
When an e-beam mask is written, the layout is rendered using a certain
pixel size. This implies a mask resolution, usually cited as the
``manufacturing grid'' or ``spot size''. This size may range from 0.5
microns for the least expensive masks, down to a few nanometers for
the most expensive.
Xic has two parameters which deal directly with mask resolution.
The MfgGrid set in the technology file will force the grid snap
points to be multiples of the value given. The SpotSize
variable controls use of a numerical preconditioner for tiny round
objects. The preconditioning should cause the pixel area to be
constant with respect to positioning and rotation. This is valuable
to researchers fabricating circular Josephson junctions using
inexpensive mask sets (for example).
In ``rasterizing'' round objects to the e-beam grid, there can be
numerical problems. Since the round object is rendered as a
collection of spot-pixels, the feature is not particularly round, but
most importantly the number of pixels used may not be well defined,
and therefor the figure area may not be as expected, or consistent.
The internal spot size is used when creating round (disk) objects and
donuts, but not arc objects or general polygons. It applies to the
round and donut buttons in the side menu, and the
corresponding script functions, but does not apply to the arc
button or general polygons. The internal spot size is also used as
the default value for the !tospot command.
If the SpotSize variable is given a non-negative value, this
value is used as the internal spot size. The value is in microns, and
1.0 micron is the largest accepted value. If this is zero, then no
preconditioning is applied. If the SpotSize variable is unset,
the internal spot size will default to the MfgGrid given in the
technology file. Thus, when a manufacturing grid is given, the
default is to use preconditioning when creating round objects. This
can be suppressed by setting SpotSize to zero. Other than this,
there probably is no reason to set the SpotSize variable, since
it should match the MfgGrid>, unless the user has special
requirements.
When the internal spot size has a positive value, objects created with
the round and donut buttons will be created so that all
vertices are placed at the center of a spot (i.e., in the center of a
manufacturing grid cell), and a minimum number of vertices will be
used. The sides number is ignored. This applies only to
figures with minimum radius 50 spots or smaller; the regular algorithm
is used otherwise. An object with this preconditioning applied should
translate exactly to the e-beam grid. The figures are symmetric with
regard to rotations in multiples of 45 degrees.
