Internationalization
A locale is what Microsoft Windows calls a country or location that uses a different language or notation. While Picture Window is only available in US English, it supports different locales in a number of ways.
Units
You can set the default units to inches, centimeters or millimeters in File/Preferences. Transformations and commands that work with physical units such as Resize, Crop, Crop Marks, Layout, Print also let you select to work in these units.
Numbers and Expressions
When Picture Window displays numbers or accepts numeric input, it uses the current locale as described below. However, when numbers are recorded in command lines within transformations, or in script or other files, they are always stored in US notation. This makes it possible to exchange files between one locale and another and still have them work correctly.
Decimal Point -- Typically, the decimal point is either a period or a comma. For example 1.23 or 1,23
Thousands Separator -- When the decimal point is a comma, the thousands separator is a period and vice versa. For example 1,000,000.00 or 1.000.000,00
Argument Separator -- When the decimal point is a comma, some other character (usually semicolon) is used to separate arguments in an argument list. For example hypot(3,4) or hypot(3;4). This comes into play since Picture Window lets you enter numbers as expressions.
Month and Day Names
The Calendar transformation uses month and day names based on the current locale.