How can I edit calloutformat.txt to include the end condition for Helicoil holes?

When you make a Helicoil straight tap hole, there is a secondary end condition: Helicoil type.  This can be set to either plug or bottom.  However, when you make a drawing of this hole, and insert a Hole Callout, this end condition is not documented.  How can I edit the calloutformat.txt file to include this condition?

Thanks,

Dan

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