diff --git a/fc-lang/und_zmth.orth b/fc-lang/und_zmth.orth
index 227afee..1d98453 100644
--- a/fc-lang/und_zmth.orth
+++ b/fc-lang/und_zmth.orth
@@ -65,12 +65,10 @@
 00D7	#	B 	# ×	MULTIPLICATION SIGN
 00F7	#	B 	# ÷	DIVISION SIGN
 0131	#	A 	# ı	LATIN SMALL LETTER DOTLESS I
-0300..0308	#	D 	# ̀..̈	COMBINING GRAVE ACCENT..DIAERESIS
 0308	#	D 	# ̈	COMBINING DIAERESIS
 030A	#	D 	# ̊	COMBINING RING ABOVE
 030C	#	D 	# ̌	COMBINING CARON
 0338	#	D 	# ̸	COMBINING LONG SOLIDUS OVERLAY
-033F	#	D 	# ̿	COMBINING DOUBLE OVERLINE
 0391..03A1	#	A 	# Α..Ρ	GREEK CAPITAL LETTER ALPHA..RHO
 03A3..03A4	#	A 	# Σ..Τ	GREEK CAPITAL LETTER SIGMA..TAU
 03A6..03A9	#	A 	# Φ..Ω	GREEK CAPITAL LETTER PHI..OMEGA
@@ -78,7 +76,6 @@
 03C3..03C9	#	A 	# σ..ω	GREEK SMALL LETTER SIGMA..OMEGA
 03D5..03D6	#	A 	# ϕ..ϖ	GREEK PHI SYMBOL..PI SYMBOL
 03F0..03F1	#	A 	# ϰ..ϱ	GREEK KAPPA SYMBOL..RHO SYMBOL
-03F4..03F5	#	A 	# ϴ..ϵ	GREEK CAPITAL THETA SYMBOL..LUNATE EPSILON SYMBOL
 2016	#	F 	# ‖	DOUBLE VERTICAL LINE
 2020	#	R 	# †	DAGGER
 2020	#	N 	# †	DAGGER
@@ -86,8 +83,6 @@
 2021	#	N 	# ‡	DOUBLE DAGGER
 2022	#	B 	# •	BULLET
 2026	#	N 	# …	HORIZONTAL ELLIPSIS
-2032..2037	#	N 	# ′..‷	PRIME..REVERSED TRIPLE PRIME
-203B	#	N 	# ※	REFERENCE MARK
 2044	#	X 	# ⁄	FRACTION SLASH
 2057	#	N 	# ⁗	QUADRUPLE PRIME
 20E1	#	D 	# ⃡	COMBINING LEFT RIGHT ARROW ABOVE
@@ -97,7 +92,6 @@
 2115	#	A 	# ℕ	DOUBLE-STRUCK CAPITAL N
 2118..211D	#	A 	# ℘..ℝ	SCRIPT CAPITAL P..DOUBLE-STRUCK CAPITAL R
 2124	#	A 	# ℤ	DOUBLE-STRUCK CAPITAL Z
-2126..2127	#	N 	# Ω..℧	OHM SIGN..INVERTED OHM SIGN
 2200..2201	#	U 	# ∀..∁	FOR ALL..COMPLEMENT
 2202	#	N 	# ∂	PARTIAL DIFFERENTIAL
 2203..2204	#	U 	# ∃..∄	THERE EXISTS..DOES NOT EXIST
@@ -127,20 +121,12 @@
 22C8	#	R 	# ⋈	BOWTIE
 22CD	#	R 	# ⋍	REVERSED TILDE EQUALS
 22CE..22CF	#	B 	# ⋎..⋏	CURLY LOGICAL OR..AND
-2300	#	N 	# ⌀	DIAMETER SIGN
 2308	#	O 	# ⌈	LEFT CEILING
 2309	#	C 	# ⌉	RIGHT CEILING
 230A	#	O 	# ⌊	LEFT FLOOR
 230B	#	C 	# ⌋	RIGHT FLOOR
-231C	#	O 	# ⌜	TOP LEFT CORNER
-231D	#	C 	# ⌝	TOP RIGHT CORNER
-231E	#	O 	# ⌞	BOTTOM LEFT CORNER
-231F	#	C 	# ⌟	BOTTOM RIGHT CORNER
 2322..2323	#	R 	# ⌢..⌣	FROWN..SMILE
 25A0..25A1	#	N 	# ■..□	BLACK SQUARE..WHITE SQUARE
-25E6	#	B 	# ◦	WHITE BULLET
-2660..2667	#	N 	# ♠..♧	BLACK SPADE SUIT..WHITE CLUB SUIT
-266D..266F	#	N 	# ♭..♯	MUSIC FLAT SIGN..SHARP SIGN
 27E6	#	O 	# ⟦	MATHEMATICAL LEFT WHITE SQUARE BRACKET
 27E7	#	C 	# ⟧	MATHEMATICAL RIGHT WHITE SQUARE BRACKET
 27E8	#	O 	# ⟨	MATHEMATICAL LEFT ANGLE BRACKET