2.1.468 Part 4 Section 18.104.22.168, doNotLeaveBackslashAlone (Convert Backslash To Yen Sign When Entered)
a. The standard states that backslashes should be converted to yen signs when typed.
Word does not alter the document, but rather displays backslashes as yen signs when this property is set.
This note applies to the following products: 2007, 2007 SP1, 2007 SP2.
b. The standard states that backslashes should be converted to yen signs unconditionally if the setting is turned on.
Word only converts backslashes to yen signs if the setting is turned on and Japanese language support has been installed.