sysWorkingDir system variable (SDL script)
The sysWorkingDir system variable (a global string) returns the Root Directory in Your System value that is set on the Launch ACS/TDK dialog for ACS.
This system variable is useful when you want to work with the root directory.
In this example, the ACS sets the C Header File property to the path and name of a generated file.
%setcustom "C Header File" = (%getvar "sysWorkingDir") & (%getvar "strFullPath") & (%getvar "sysHeaderExtension")