Directory Separator
The directory separator is platform specific. On Windows, the indicator is double backslash (\\) when specifying the paths for a recipe file location or a command line argument location. You can also use the syntax ${dir.sep} as a directory separator. When ${dir.sep} is used inwpc_preferences.txt file, $ is replaced with \\. The \\ and the ${dir.sep} separators can be used in combination:
#export.default.recipefile=c:\\ptc\\wpc${dir.sep} recipes\\defaultRecipeFile.rcp.