The official standardization of Microsoft's Office Open XML document format could be delayed after a formal objection was made to the International Organization for Standardization.

At the start of April, the OOXML specification won a vote for approval among individual countries' standards bodies. In line with ISO's procedures, there then began a two-month period during which the formal publication of the "DIS 29500" standard could be delayed or even derailed. For this to happen, a "P member" (participating member) of ISO would have to formally protest the decision--and on Thursday, the South African Bureau of Standards (SABS) became that member.

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