"hjkl", as there is (imho) no logical mnemonic for the directions. left: "h" is leftmost in the group right: "l" is rightmost in the group down: "j" extends

"hjkl", as there is (imho) no logical mnemonic for the directions. left: "h" is leftmost in the group right: "l" is rightmost in the group down: "j" extends down below the baseline up: "k" extends up to the topline