     ⊂ enclose leftshoe partition
     ⊃ disclose rightshoe pick
     ⌷ squishquad squad index default materialise
-    ⍋ gradeup deltastile upgrade
-    ⍒ gradedown delstile downgrade
+    ⍋ gradeup deltastile upgrade pine
+    ⍒ gradedown delstile downgrade spine
     ⍳ iota indices indexof
     ⍷ find epsilonunderbar
     ∪ cup union unique downshoe distinct

    ⍣ poweroperator stardiaeresis
    . dot
    ∘ jot compose ring
    ⍤ jotdiaeresis rank
    ⍞ quotequad characterinput rawinput
    ⎕ quad input evaluatedinput
    ⍠ colonquad quadcolon variant option

    ∥ parallel
    ∆ delta triangleup uptriangle
    ⍙ deltaunderbar
    ⍥ circlediaeresis hoof
    ⍫ deltilde
    á aacute
    Ⓐ _a
