ST_TextAutonumberScheme = %w{ alphaLcParenBoth alphaUcParenBoth alphaLcParenR alphaUcParenR
                                alphaLcPeriod alphaUcPeriod arabicParenBoth arabicParenR arabicPeriod arabicPlain
                                romanLcParenBoth romanUcParenBoth romanLcParenR romanUcParenR
                                romanLcPeriod romanUcPeriod circleNumDbPlain circleNumWdBlackPlain
                                circleNumWdWhitePlain arabicDbPeriod arabicDbPlain ea1ChsPeriod ea1ChsPlain