Unicode 6.3.0 (September 2013)

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Codepoint	Description
U+061C	ARABIC LETTER MARK (ALM)
U+2066	LEFT-TO-RIGHT ISOLATE (LRI)
U+2067	RIGHT-TO-LEFT ISOLATE (RLI)
U+2068	FIRST STRONG ISOLATE (FSI)
U+2069	POP DIRECTIONAL ISOLATE (PDI)
(5 new codepoints)