+ 
+ + units [internal|lambda|user|grid|microns|default] [print|noprint]+ +
+ or
+ units [list]
+ +
+ The units command causes printed measurements to be + given in the selected units. The possible unit types are + internal, the size of the internal database units, + lambda, the lambda grid based on the technology minimum + feature size, user (or grid), based on the + value given by the user to the grid command, or + microns, which are physical units dependent on the + CIF or GDS output scaling as defined in the technology file.+ ++ + The units command also changes the way + that distance measurements are + interpreted in commands that take distance arguments, such + as move, copy, and stretch. An integer + number with no other identifying units is interpreted as a + measurement in the current units type. All other measurements + must have an identifying unit: i for internal units, + l for lambda units, and g for user grid units, + as well as the usual metric units such as um for + microns, nm for nanometers, and so forth. See the + reference page on distance measures + for a complete description of distance values.
+ + For printed units, the additional argument print + causes the units to be printed along with the value; e.g., + "1.0um." This is the usual setting for interactive + use. The argument noprint suppresses the unit name, + which is appropriate for scripted use, when the value may + be passed to arithmetic expressions to be evaluated by the + interpreter.
+ + units with no arguments returns the current units type. + units list returns the current units type as a Tcl list + of two items; the first item is the units type, and the second + item is print or noprint, indicating whether units + suffixes are printed with the values.
+ + Historically, values parsed from the command line were interpreted + according to the snap setting. On startup, this behavior + remains in effect for backwards compatibility until overridden + with a units command. The command units default + reverts back to the original behavior. Once the units + default type is overridden, the snap behavior is controlled + independently of units.
+
+ units is implemented as a built-in command in magic. ++ +
+ grid+ +
+ snap
+
+
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Last updated: March 7, 2020 at 1:06pm
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