Sample File for PDF Attachment Demo
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This is a sample text file that can be used to test the PDF attachment functionality.

You can use this file to:
- Test adding attachments to PDF documents
- Practice extracting attachments from PDF files
- Verify the attachment functionality works correctly

Features demonstrated:
- File attachment with original filename
- Binary data preservation
- File size reporting
- Extraction with original content

File created: 2024-01-01
Demo version: 1.0

This file can be safely attached to any PDF document using the demo application.