For a share option trade, indicates whether the instrument is to be treated as an 'exchange look-alike'.

This designation has significance for how share adjustments (arising from corporate actions) will be determined for the instrument. For an 'exchange look-alike' instrument the relevant share adjustments will follow that for a corresponding designated contract listed on the related exchange (referred to as Options Exchange Adjustment (ISDA defined term)), otherwise the share adjustments will be determined by the calculation agent (referred to as Calculation Agent Adjustment (ISDA defined term)).