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# 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