【明報專訊】IN DELIVERING his policy address, Chief Executive (CE) Leung Chun-ying mentioned a pilot scheme for selling flats in the Housing Authority's (HA's) public rental housing (PRH) developments to Green Form people (those who live in PRH and those who have passed the detailed vetting and are due for flat allocation). On the face of it, such a scheme may further improve the housing ladder and make PRH units available to families on the PRH waiting list.