本文是指The points-based immigration system is the means of regulating Immigration to the United Kingdom from outside the European_Economic_Area (EEA). The scheme   was phased in between 2008 and 2010. It is composed of five "tiers" which replaced all the previous work permits and entry schemes, including Scotland's Fresh Talent Initiative. The system is administered by the UK Border Agency.

2. add-on 附加利益 an extra part which is added, especially to an officially organized plan, system, agreement