13.4. File Information Variables
Purpose
These variables provide information on the file SDF is currently processing.
Interface
| Name | Type | Purpose | 
| FILE_PATH | string | current pathname (e.g. /doc/sdf/mydoc.sdf) | 
| FILE_DIR | string | directory of current filename (e.g. /doc/sdf) | 
| FILE_BASE | string | base component of current filename (e.g. mydoc) | 
| FILE_EXT | string | extension of current filename (e.g. sdf) | 
| FILE_MODIFIED | datetime | time when this file was last modified | 
