Format requires use of "dash" to surround the number, but no indication of which Unicode dash is intended, en-dash, em-dash, hyphen-minus, figure-dash, quotation-dash, etc.

Specify the intended dash explicitly.

"numberInDash", etc. Part 4, Section 2.18.66

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Proposed Disposition of DIS 29500 Comment GR-0061 (Modified: 2007-11-29) Agreed; the following changes will be made in Part 4, section 2.18.66, page 1,776: numberInDash (Number With Dashes) Specifies that the sequence shall consist of the Arabic numbering surrounded by dash hyphen- minus characters (U+002D) . [Example: - 1 -, - 2 -, - 3 -. end example] Similar Comments: BR-0032 , CA-0034 , CL-0135 , CO-0137 , DE-0079 , FR-0331 , GB-0285 , JP-0065 , KE-0043 , PT-0074 , VE-0048