IPC/WHMA-A-620D-S to IPC/WHMA-A-620E-S Redline document shows the changes from IPC/WHMA-A-620D-S to IPC/WHMA-A-620E-S in a side-by-side comparison of the two documents. The IPC/WHMA-A-620D-S to IPC/WHMA-A-620E-S redline is only available in electronic format. It is not available in hardcopy.