Deprecated in v6.1 and deleted from v5.3 proj 19908 and projCRS 29900; added datum 5130 5131 6188, proj 19972-73, geogCRS 4188, projCRS 29901-03, vertCRS 5731-32. Additional remarks added to geogCRS 4299 and 4300. Alias added to 4300.