To view PDF file, you need to use the Adobe Acrobat Reader software and Adobe Asian Fonts Pack (for supporting Chinese characters), which are available free of charge at the Adobe Systems Incorporated website.

The text of those PDF publications for issues of 1999 Edition and before were scanned from its printed version and then converted to electronic text using Optical Character Recognition (OCR) software. Because of the age and condition of the original printed copy, the OCR may not recognise certain characters or figures accurately. Caution should therefore be taken when searching or copying text from these PDF publications.