Amended remarks for projCRS 24200 from "Supersedes 24100 (JAD69 / Jamaica National Grid)" to "Supersedes CRS code 24100 Jamaica 1875 / Jamaica (Old Grid)". Amended remarks for proj 19909 from "Supersedes Jamaica (New Grid)" to "Supersedes Jamaica National Grid". Added information source to proj 19909-10; projCRS 24100 24200 geogCRS 4241-42; datum 6241-42.