Unquoted identifiers which match defined macros are replaced with their definitions. Leaving attribute values unquoted is considered unsafe. One exception is the handling of unquoted identifiers like table or column names. Any unquoted expressions are recursively evaluated before the enclosing expression is evaluated. They are structured as a large unquoted, private company, limited by share capital. This was achieved without raising public capital and the Group remain an unquoted company. The company is an unquoted limited company. The parent company BridgeHead Software Limited is unquoted and registered in London, England.