Default Runtime Parameters/variables

What is the use of default runtime parameters/variables?
{Internal.Entry.Current.Directory} and {Internal.Process.Filename.Directory}.

Hi Mayur,

Both these default variables/parameter point to the folder/path where the current workflow/process is saved.
Eg. ${Internal.Entry.Current.Directory}/Input/Filename.xls
If workflow is saved under “D:\Projects_Data\Process1” then total path will reflected as D:/Projects_Data/Process1/Input/Filename.xls