Hi BioMart team,

I haven't used MartBuilder for a mart I've built because there isn't a
source schema and I was wondering if you could help me with how I should add
optimiser columns manually to my mart?  Just a few questions:

   - Do optimiser columns need to have a certain naming scheme?
   - If you put optimiser columns not in the main table but a separate table
   what should the table name be?
   - What are index optimiser columns?  What do they produce when checked in
   MartBuilder so that I can add them manually?

thank you,
Leandro

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