1.4 Unicode installers
Starting with NSIS v3.0 you can choose to create Unicode installers by setting the Unicode attribute. These installers will not work on Windows 95/98/ME but they will allow you to display your installer in any Unicode language supported by the OS.
When building a Unicode installer NSIS variables can hold Unicode characters (0001-FFFF). There should be no need to modify your existing scripts. If you want to read/write Unicode files, specific instructions have been added to read/write UTF-16LE strings from/to disk.