FILE.Open

hFid = FILE.Open( [strFileName   AS STRING=NULL],

                 [bOpenGrid     AS INTEGER=SystemDefault],

                 [bCreateNew    AS INTEGER=SystemDefault],

                 [bOpenShared   AS INTEGER=SystemDefault] ) AS HANDLE

Opens a new file with an optional grid and/or analysis and shared.  The hFid is returned if successful. 

If the file isn't a C3D file or an imported file, then the function will return NULL.  If an error occured, then the function will return INVALID_HANDLE_VALUE