Saving Files in a specific Path

Hey guys,

my .tcl-script creates different filetypes and saves all of them into the document folder. In order to not create a mess of files, I want them to be saved in a specific folder.

I copied the path of my folder and read it by opening a script, which saves the path into a variable.

At the moment, I'm using the following command to create a new file:

set f [open path.txt w]

How can I save the file into a specific path?

Kind regards,

Simon