PURCHASE THE PDF/REDLINE DOWNLOAD VERSION AND GET IMMEDIATE ACCESS!!! The PDF/Redline Download option contains PDF files of both the base I-Code and a Redline version of the I-Code which shows changes from the previous edition marked in the color red. With the Redline you can quickly spot changed sections and tell specifically what has been changed from the previous edition, saving time and confusion. This option is mobile friendly and compatible with all devices, including mobile tablets and smart phones. Requires a PDF Reader. Use of a local area network or other network is not permitted.