** looking for *.pdf files
cDir=GETFILE('PDF', 'Select a file')
_cliptext=(cDir)    &&put the name of the directory on the clipboard if required
if empty(cDir)
	messagebox(cDir+" does not exist","")
	*put the code to create a new directory
else
	cd (cDir)  && to go to directory 
        *or put your code here to make use of the cDir (directory name)
ENDIF