os.Path.dirOpen
Opens a directory and returns an integer handle to this directory.
Syntax
os.Path.dirOpen(
   path STRING)
  RETURNS INTEGER
- path is the name of the directory.
 - handle is the directory handle.
 
Usage
This function creates a handle to scan the elements of a directory.
The function returns a value of 0 if it fails to open the directory.
Before calling the dirOpen() method, you can define a filter
 with os.Path.dirFMask(),
 and a sort order
 with os.Path.dirSort().