This is a post by Punditas on blog.

Starting with Creo 7.0, there’s better control over the placement of ordinate dimensions that are created in models and drawings. Prior to this Creo 7.0 release, when creating ordinate dimensions per ANSI standards, these dimensions would get placed when they are aligned with the baseline. However, this can now be controlled using “default_ansi_ord_dim_aligned” config option….

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