+3: … # opposite of ⋮ (more logical would be to swap with .3 ⋯)
+.> ‣ # similar to .=
+.1 ․ # obvious location, even though ‥ and … are at inconsistent .. and 3:
+** ⁑
+*3 ⁂
+8< ✂ # ascii scissors
+:* ☃ # unicodesnowmanforyou.com
+0Q ◔ # quarter black
+0q ◕ # quarter not black, completes sequence 0m 0q 0R 0Q 0M
+
+# missing mathematical symbols
+(/ ⊄ # similar to (_
+)/ ⊅ # similar to )_
+(+ ∉ # (- with stroke
++) ∌ # -) with stroke
+!3 ≢ # !=3
++T ⊤ # inverse -T
+*+ ⋆ # apl star operator
+
+# circled maths
+*0 ⍟ # circle star, 0* is asterisk
+0X ⊗ # *X like 0.
++0 ⊕ # 0+ already in use
+0/ ⊘
+0- ⊖
+0* ⊛
+0: ⨸
+0% ⦼ # no circled percent, but close
+0< ⧀
+0= ⊜
+0> ⧁
+0! ⦶ # no circled exclamation mark
+0I ⌽ # circle stile
+0T ⍉ # circle backslash = APL Transpose
+
+# greek-derived symbols
+*a ⍺ # a* apl
+*i ⍳ # i* apl
+*I ⍸ # shifted *i
+*r ⍴ # r* apl
+*w ⍵ # w* apl
+*f ϕ # stroked f* symbol
+*p ϖ # omega p* symbol
+*k ϗ # k* abbreviation
+*R ϱ # tailed r* symbol
+*h ϑ # script h* symbol
+
+# diagonal arrows
+/! ↗ # /> in use
+v/ ↙ # </ in use
+!/ ↖ # /< (home)
+/v ↘ # >/ (end)
+*! ⇞ # page-up
+*v ⇟ # page-down
+
+# control/modifier keys
+>I ⇥ # tab = Ctrl-I (also arrow-to-bar lookalike)
+<I ⇤ # I< in use
+<X ⌫ # erase left (bs)
+X> ⌦ # erase right (del)
+=X ⌧ # erase
+aV ⎀ # insertation, commonly represented as a with caron below (V)
+88 ⌘ # command (apple, windows, super)
+#=/ ⌥ # option (alt)
+CO ⎄ # composition (shift+altgr)
+XO ⎈ # helm (ctrl)
++! ⇧ # white arrow (shift); like =!
+Cr ↵ # ↵ (carriage return); CR in use for actual control
+
+# software command icons
+Cv 📋 # clipboard (Ctrl-V)
+Cs 💾 # floppy (Ctrl-S)
+Cl 📂 # open file (Ctrl-L/O but co in use)
+Cn 🗋 # empty document (Ctrl-N)
+Cp 🖶 # print (Ctrl-P)
+-O 🔎 # magnifying glass (search/details)
+
+# xorg compatibility
+.= • # previously ()
+<3 ♥ # rfc has trigraph cH-