Why is it important to make sure that marking out is undertaken from the selected datums?
1. Question is really vague, it is important to
mark out the selected datum, as you just selected that datum? What
else are you going to do with It? If you are working from another
datum point just ensure that it is a good datum with critical
measurements checked otherwise the new datum could throw out al
measurements.
P.s i wish the selected retards would stop
answering with nonsense answers.
Is datum the plural of data?
Datum is not the plural of data. Datum is singular, and its
plural form is data.