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Introduction
Helpful Information
Frequently Asked Questions
Troubleshooting
Basic Functions
Print
Accessibility and Advanced Function
Accessibility
Advanced Function
Component Names and Cleaning Method
About This Machine
Control Panel
Maintenance
Setting
Descriptions of Functions / Utility Keys
Web Management Tool
Search by Usage
Search by Purpose
Security Enhancement
Cost Saving
in the upper-right of a page, it turns into 
and is registered as a bookmark.