diff --git a/tests/extend-zi/ref.typ b/tests/extend-zi/ref.typ
new file mode 100644
index 0000000..43f41fb
--- /dev/null
+++ b/tests/extend-zi/ref.typ
@@ -0,0 +1,5 @@
+#set page(width: auto, height: auto, margin: .5em)
+
+
+$1#sym.space.thin"fs"$ \
+$1#sym.space.thin"µZero"$ \
\ No newline at end of file
diff --git a/tests/extend-zi/ref/1.png b/tests/extend-zi/ref/1.png
deleted file mode 100644
index d33f1ec..0000000
Binary files a/tests/extend-zi/ref/1.png and /dev/null differ
diff --git a/tests/extend-zi/test.typ b/tests/extend-zi/test.typ
index 90d568f..80f726f 100644
--- a/tests/extend-zi/test.typ
+++ b/tests/extend-zi/test.typ
@@ -1,6 +1,5 @@
 #set page(width: auto, height: auto, margin: .5em)
 #import "zi.typ"
 
-#zi.fs[1]
-
-#zi.µZ[1]
+#zi.fs[1] \
+#zi.µZ[1] \
diff --git a/tests/assertions/.gitignore b/tests/internal/assertions/.gitignore
similarity index 100%
rename from tests/assertions/.gitignore
rename to tests/internal/assertions/.gitignore
diff --git a/tests/assertions/test.typ b/tests/internal/assertions/test.typ
similarity index 100%
rename from tests/assertions/test.typ
rename to tests/internal/assertions/test.typ
diff --git a/tests/formatting/.gitignore b/tests/internal/formatting/.gitignore
similarity index 100%
rename from tests/formatting/.gitignore
rename to tests/internal/formatting/.gitignore
diff --git a/tests/formatting/test.typ b/tests/internal/formatting/test.typ
similarity index 100%
rename from tests/formatting/test.typ
rename to tests/internal/formatting/test.typ
diff --git a/tests/parsing/.gitignore b/tests/internal/parsing/.gitignore
similarity index 100%
rename from tests/parsing/.gitignore
rename to tests/internal/parsing/.gitignore
diff --git a/tests/parsing/test.typ b/tests/internal/parsing/test.typ
similarity index 100%
rename from tests/parsing/test.typ
rename to tests/internal/parsing/test.typ
diff --git a/tests/rounding/.gitignore b/tests/num/digits/.gitignore
similarity index 100%
rename from tests/rounding/.gitignore
rename to tests/num/digits/.gitignore
diff --git a/tests/num/digits/ref.typ b/tests/num/digits/ref.typ
new file mode 100644
index 0000000..5a3fa19
--- /dev/null
+++ b/tests/num/digits/ref.typ
@@ -0,0 +1,9 @@
+#set page(width: auto, height: auto, margin: 2pt)
+
+
+$1.23$ \
+$1.20$ \
+$1$ \
+$3$ \
+$-1.23$ \
+$-1.20$ \
diff --git a/tests/num/digits/test.typ b/tests/num/digits/test.typ
new file mode 100644
index 0000000..2261f92
--- /dev/null
+++ b/tests/num/digits/test.typ
@@ -0,0 +1,10 @@
+#import "/src/zero.typ": *
+#set page(width: auto, height: auto, margin: 2pt)
+
+
+#num("1.234", digits: 2) \
+#num("1.2", digits: 2) \
+#num("1.234", digits: 0) \
+#num("3.2", digits: 0) \
+#num("-1.234", digits: 2) \
+#num("-1.2", digits: 2) \
diff --git a/tests/num/grouping/.gitignore b/tests/num/grouping/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/num/grouping/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/num/grouping/ref.typ b/tests/num/grouping/ref.typ
new file mode 100644
index 0000000..fa8b7b6
--- /dev/null
+++ b/tests/num/grouping/ref.typ
@@ -0,0 +1,19 @@
+#set page(width: auto, height: auto, margin: 2pt)
+
+#let th = sym.space.thin
+
+
+$10.10$ \
+$123.321$ \
+$1234.4321$ \
+$12th 345.543th 21$ \
+$1th 234th 567$ \
+$1234567$ \
+$1th 234.432th 1$ \
+$1"'"23"'"45.54"'"32"'"1$ \
+
+#pagebreak()
+
+$23th 232.2323$ \
+$23232.232th 3$ \
+$23th 232.2323$ \
diff --git a/tests/num/grouping/test.typ b/tests/num/grouping/test.typ
new file mode 100644
index 0000000..c76ebc1
--- /dev/null
+++ b/tests/num/grouping/test.typ
@@ -0,0 +1,34 @@
+#import "/src/zero.typ": *
+#set page(width: auto, height: auto, margin: 2pt)
+
+
+
+#num("10.10") \
+#num("123.321") \
+#num("1234.4321") \
+#num("12345.54321") \
+#num("1234567") \
+#set-group(threshold: calc.inf)
+#num("1234567") \
+#set-group(threshold: 3)
+#num("1234.4321") \
+#set-group(separator: "'", size: 2)
+#num("12345.54321") \
+#set-group(separator: sym.space.thin, size: 3, threshold: 5)
+
+
+#pagebreak()
+
+// Asymmetric thresholds
+#num(
+  group: (threshold: (fractional: 5, integer: 3)),
+  [23232.2323],
+) \
+#num(
+  group: (threshold: (fractional: 3, integer: calc.inf)),
+  [23232.2323],
+) \
+#num(
+  group: (threshold: (integer: 3, fractional: calc.inf)),
+  [23232.2323],
+)
diff --git a/tests/num/identical/.gitignore b/tests/num/identical/.gitignore
deleted file mode 100644
index db843b2..0000000
--- a/tests/num/identical/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-/ref
\ No newline at end of file
diff --git a/tests/num/identical/ref.typ b/tests/num/identical/ref.typ
deleted file mode 100644
index 73894b0..0000000
--- a/tests/num/identical/ref.typ
+++ /dev/null
@@ -1,14 +0,0 @@
-#set page(width: auto, height: auto, margin: .5em)
-
-#let th = sym.space.thin
-#table(
-  $10th 220th 001$,
-  $1times 10^3$,
-  $-1times 10^(−3)$,
-  $1 plus.minus 2$,
-  $(1 plus.minus 2) times 10^1$,
-  $+2$,
-  $1.00^(+0.20)_(-0.10)$,
-  $1(2)$,
-  $(-2 plus.minus 1) times 10^1$,
-)
diff --git a/tests/num/identical/test.typ b/tests/num/identical/test.typ
deleted file mode 100644
index dd860b2..0000000
--- a/tests/num/identical/test.typ
+++ /dev/null
@@ -1,15 +0,0 @@
-#set page(width: auto, height: auto, margin: .5em)
-#import "/src/zero.typ": num, set-unit, zi
-
-
-#table(
-  num[10220001],
-  num[1e3],
-  num[-1e-3],
-  num[1+-2],
-  num[1+-2e1],
-  num(positive-sign: true)[+2],
-  num[1.00+.2-0.1],
-  num(uncertainty-mode: "compact")[1+-2],
-  num[-2+-1e1],
-)
diff --git a/tests/num/input-formats/ref.typ b/tests/num/input-formats/ref.typ
index 035ef7c..d1ee3a2 100644
--- a/tests/num/input-formats/ref.typ
+++ b/tests/num/input-formats/ref.typ
@@ -1,9 +1,25 @@
-#import "/src/zero.typ": *
 #set page(width: auto, height: auto, margin: 2pt)
 
-
+$0$ \
+$-0$ \
+$-2.23$ \
+$-2.23$ \
 $-2.23$ \
 $-2.23$ \
 $-2.23$ \
 $-112.3$ \
 $23×10^2$
+
+#pagebreak()
+
+$0.1$ \
+$0.1$ \
+$2×10^(-1.2)$ \
+
+#pagebreak()
+
+$1$ $2$
+
+#pagebreak()
+
+$+1$ $+2$
diff --git a/tests/num/input-formats/test.typ b/tests/num/input-formats/test.typ
index a14b174..6163466 100644
--- a/tests/num/input-formats/test.typ
+++ b/tests/num/input-formats/test.typ
@@ -1,9 +1,42 @@
 #import "/src/zero.typ": *
 #set page(width: auto, height: auto, margin: 2pt)
 
-
+#num[0] \
+#num[-0] \
 #num[-2.23] \
+#num[-2,23] \
 #num(-2.23) \
 #num("-2.23") \
+#num("-2,23") \
 #num((mantissa: "-112.3", e: none, pm: none)) \
 #num((mantissa: 23, e: "2", pm: none))
+
+#pagebreak()
+
+#num[.1] \
+#num[,1] \
+#num[2e-1,2] \
+
+
+
+#pagebreak()
+
+// Advanced input
+
+
+
+// num with array input
+#context {
+  num(("1", "2")).join(" ")
+}
+
+#pagebreak()
+
+// num with state input
+#context {
+  let state = impl.num-state.get()
+  state.positive-sign = true
+  num("1", state: state)
+  [ ]
+  num("2", state: state)
+}
diff --git a/tests/num/omit-unity-mantissa/.gitignore b/tests/num/omit-unity-mantissa/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/num/omit-unity-mantissa/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/num/omit-unity-mantissa/ref.typ b/tests/num/omit-unity-mantissa/ref.typ
new file mode 100644
index 0000000..dfd297c
--- /dev/null
+++ b/tests/num/omit-unity-mantissa/ref.typ
@@ -0,0 +1,19 @@
+#set page(width: auto, height: auto, margin: 2pt)
+
+$1×10^9$ \
+$10^9$ \
+$2×10^9$ \
+$(1plus.minus 1)×10^9$ \
+$1$ \
+$10^3$ \
+$1×10^3$ \
+
+#pagebreak()
+
+$1.00×10^2$ \
+$10^2$ \
+
+#pagebreak()
+
+$+10^3$ \
+$-10^3$ \
\ No newline at end of file
diff --git a/tests/num/omit-unity-mantissa/test.typ b/tests/num/omit-unity-mantissa/test.typ
new file mode 100644
index 0000000..97e9b88
--- /dev/null
+++ b/tests/num/omit-unity-mantissa/test.typ
@@ -0,0 +1,28 @@
+#import "/src/zero.typ": *
+#set page(width: auto, height: auto, margin: 2pt)
+
+
+#num("1e9", omit-unity-mantissa: false) \
+#num("1e9", omit-unity-mantissa: true) \
+#num("2e9", omit-unity-mantissa: true) \
+#num("1+-1e9", omit-unity-mantissa: true) \
+#num("1", omit-unity-mantissa: true) \
+#set-num(omit-unity-mantissa: true)
+#num("1e3") \
+#set-num(omit-unity-mantissa: false)
+#num("1e3") \
+
+#pagebreak()
+
+// not omitted because mantissa is 1.00
+#num(omit-unity-mantissa: true, exponent: "sci")[100] \
+// but omitted when trailing zeros are trimmed
+#num(omit-unity-mantissa: true, exponent: "sci", trim-zeros: true)[100]
+
+
+
+#pagebreak()
+
+// combine signs and omit-unity-mantissa
+#num("1e3", positive-sign: true, omit-unity-mantissa: true) \
+#num("-1e3", positive-sign: true, omit-unity-mantissa: true) \
diff --git a/tests/num/positive-sign-exponent/.gitignore b/tests/num/positive-sign-exponent/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/num/positive-sign-exponent/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/num/positive-sign-exponent/ref.typ b/tests/num/positive-sign-exponent/ref.typ
new file mode 100644
index 0000000..c324aab
--- /dev/null
+++ b/tests/num/positive-sign-exponent/ref.typ
@@ -0,0 +1,8 @@
+#set page(width: auto, height: auto, margin: 2pt)
+
+$1×10^3$ \
+$1×10^(+3)$ \
+$1×10^(-1)$ \
+$1×10^(-1)$ \
+$1×10^(+9)$ \
+$1×10^(9)$ \
diff --git a/tests/num/positive-sign-exponent/test.typ b/tests/num/positive-sign-exponent/test.typ
new file mode 100644
index 0000000..ae95e09
--- /dev/null
+++ b/tests/num/positive-sign-exponent/test.typ
@@ -0,0 +1,12 @@
+#import "/src/zero.typ": *
+#set page(width: auto, height: auto, margin: 2pt)
+
+
+#num("1e3", positive-sign-exponent: false) \
+#num("1e3", positive-sign-exponent: true) \
+#num("1e-1", positive-sign-exponent: false) \
+#num("1e-1", positive-sign-exponent: true) \
+#set-num(positive-sign-exponent: true)
+#num("1e9") \
+#set-num(positive-sign-exponent: false)
+#num("1e9")
diff --git a/tests/num/positive-sign/.gitignore b/tests/num/positive-sign/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/num/positive-sign/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/num/positive-sign/ref.typ b/tests/num/positive-sign/ref.typ
new file mode 100644
index 0000000..7720e48
--- /dev/null
+++ b/tests/num/positive-sign/ref.typ
@@ -0,0 +1,8 @@
+#set page(width: auto, height: auto, margin: 2pt)
+
+$1$ \
+$+1$ \
+$-1$ \
+$-1$ \
+$+9$ \
+$9$ \
diff --git a/tests/num/positive-sign/test.typ b/tests/num/positive-sign/test.typ
new file mode 100644
index 0000000..70ca4ae
--- /dev/null
+++ b/tests/num/positive-sign/test.typ
@@ -0,0 +1,14 @@
+#import "/src/zero.typ": *
+#set page(width: auto, height: auto, margin: 2pt)
+
+
+
+#num("1", positive-sign: false) \
+#num("1", positive-sign: true) \
+#num("-1", positive-sign: false) \
+#num("-1", positive-sign: true) \
+#set-num(positive-sign: true) 
+#num("9") \
+#set-num(positive-sign: false) 
+#num("9") \
+
diff --git a/tests/num/power/.gitignore b/tests/num/power/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/num/power/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/num/power/ref.typ b/tests/num/power/ref.typ
new file mode 100644
index 0000000..a92311b
--- /dev/null
+++ b/tests/num/power/ref.typ
@@ -0,0 +1,19 @@
+#set page(width: auto, height: auto, margin: 2pt)
+
+$2.3×10^3$ \
+$-1.1×10^(-3)$ \
+
+#pagebreak()
+
+$2×10^9$ \
+$2·10^9$ \
+$2·10^9$ \
+$2×10^9$ \
+
+#pagebreak()
+
+$1×2^2$ \
+$1×e^2$ \
+$1×pi^2$ \
+$1×4^2$ \
+$1×10^2$ \
diff --git a/tests/num/power/test.typ b/tests/num/power/test.typ
new file mode 100644
index 0000000..eed5d9d
--- /dev/null
+++ b/tests/num/power/test.typ
@@ -0,0 +1,27 @@
+#import "/src/zero.typ": *
+#set page(width: auto, height: auto, margin: 2pt)
+
+#num[2.3e3] \
+#num[-1.1e-3] \
+
+#pagebreak()
+
+// multiplication symbol
+#num("2e9") \
+#num("2e9", product: math.dot) \
+#set-num(product: math.dot)
+#num("2e9") \
+#set-num(product: math.times)
+#num("2e9") \
+
+#pagebreak()
+
+
+// base
+#num("1e2", base: 2) \
+#num("1e2", base: $e$) \
+#num("1e2", base: $π$) \
+#set-num(base: "4")
+#num("1e2") \
+#set-num(base: 10)
+#num("1e2")
diff --git a/tests/num/rounding/.gitignore b/tests/num/rounding/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/num/rounding/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/num/rounding/ref.typ b/tests/num/rounding/ref.typ
new file mode 100644
index 0000000..e60e111
--- /dev/null
+++ b/tests/num/rounding/ref.typ
@@ -0,0 +1,44 @@
+
+#set page(width: auto, height: auto, margin: .5em)
+
+$1.23$ \
+$1.24$ \
+$1.1$ \
+$1.10$ \
+$1.19$ \
+$1.20$ \
+$1.19$ \
+
+#pagebreak()
+
+$1.3$ \
+$0.000#sym.space.thin 012$ \
+$9900$ \
+$10#sym.space.thin 000$ \
+
+#pagebreak()
+
+$1.23plus.minus 0.03$ \
+$1.2342plus.minus 0.0003$ \
+$9plus.minus 2$
+
+#pagebreak()
+
+$1.234$ \
+
+#pagebreak()
+
+$1$
+
+#pagebreak()
+
+$0.000$ \
+$0.000$ \
+$0$ \
+$0.000$ \
+
+#pagebreak()
+
+$423.4×10^2$ \
+$4.2×10^4$ \
+$42×10^3$ \
diff --git a/tests/rounding/test.typ b/tests/num/rounding/test.typ
similarity index 91%
rename from tests/rounding/test.typ
rename to tests/num/rounding/test.typ
index f85f9d5..5a008d5 100644
--- a/tests/rounding/test.typ
+++ b/tests/num/rounding/test.typ
@@ -1,5 +1,5 @@
 #import "/src/rounding.typ": *
-#import "/src/zero.typ": num
+#import "/src/zero.typ": num, set-round
 
 
 
@@ -286,6 +286,63 @@
 
 #set page(width: auto, height: auto, margin: .5em)
 
+// Places
+#set-round(mode: "places", precision: 2)
+#num("1.234") \
+#num("1.236") \
+#set-round(pad: false)
+#num("1.1") \
+#set-round(pad: true)
+#num("1.1") \
+#set-round(direction: "towards-negative-infinity")
+#num("1.199") \
+#set-round(direction: "towards-infinity")
+#num("1.192") \
+#num("1.190") \
+#set-round(direction: "nearest")
+
+
+#pagebreak()
+
+// Figures
+#set-round(mode: "figures", precision: 2)
+#num("1.27") \
+#num("0.00001227") \
+#num("9876") \
+#num("9976") \
+
+
+#pagebreak()
+
+
+// Uncertainty
+#set-round(mode: "uncertainty", precision: 1)
+#num("1.234(34)") \
+#num("1.23422(34)") \
+#num("8.8+-2") \
+
+
+#pagebreak()
+
+
+// Turning off rounding
+#set-round(mode: "places")
+#num(round: (precision: none), "1.234") \
+
+
+#pagebreak()
+
+
+// Tie to odd
+#set-round(precision: none)
+#num(round: (precision: 0, ties: "to-odd"))[.5]
+
+
+
+#pagebreak()
+
+
+
 // Rounding zero
 #num(round: (precision: 3, mode: "places"))[0] \
 #num(round: (precision: 3, mode: "places"))[0.0] \
diff --git a/tests/num/self/ref/1.png b/tests/num/self/ref/1.png
deleted file mode 100644
index 927f9de..0000000
Binary files a/tests/num/self/ref/1.png and /dev/null differ
diff --git a/tests/num/self/ref/10.png b/tests/num/self/ref/10.png
deleted file mode 100644
index 913ad07..0000000
Binary files a/tests/num/self/ref/10.png and /dev/null differ
diff --git a/tests/num/self/ref/11.png b/tests/num/self/ref/11.png
deleted file mode 100644
index 93b4a71..0000000
Binary files a/tests/num/self/ref/11.png and /dev/null differ
diff --git a/tests/num/self/ref/12.png b/tests/num/self/ref/12.png
deleted file mode 100644
index 16ce947..0000000
Binary files a/tests/num/self/ref/12.png and /dev/null differ
diff --git a/tests/num/self/ref/13.png b/tests/num/self/ref/13.png
deleted file mode 100644
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diff --git a/tests/num/self/ref/14.png b/tests/num/self/ref/14.png
deleted file mode 100644
index b2db99f..0000000
Binary files a/tests/num/self/ref/14.png and /dev/null differ
diff --git a/tests/num/self/ref/15.png b/tests/num/self/ref/15.png
deleted file mode 100644
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Binary files a/tests/num/self/ref/15.png and /dev/null differ
diff --git a/tests/num/self/ref/16.png b/tests/num/self/ref/16.png
deleted file mode 100644
index fcd98c2..0000000
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diff --git a/tests/num/self/ref/17.png b/tests/num/self/ref/17.png
deleted file mode 100644
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diff --git a/tests/num/self/ref/18.png b/tests/num/self/ref/18.png
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index c03b002..0000000
Binary files a/tests/num/self/ref/18.png and /dev/null differ
diff --git a/tests/num/self/ref/19.png b/tests/num/self/ref/19.png
deleted file mode 100644
index ce24c6a..0000000
Binary files a/tests/num/self/ref/19.png and /dev/null differ
diff --git a/tests/num/self/ref/2.png b/tests/num/self/ref/2.png
deleted file mode 100644
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Binary files a/tests/num/self/ref/2.png and /dev/null differ
diff --git a/tests/num/self/ref/20.png b/tests/num/self/ref/20.png
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diff --git a/tests/num/self/ref/21.png b/tests/num/self/ref/21.png
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diff --git a/tests/num/self/ref/22.png b/tests/num/self/ref/22.png
deleted file mode 100644
index 516608b..0000000
Binary files a/tests/num/self/ref/22.png and /dev/null differ
diff --git a/tests/num/self/ref/3.png b/tests/num/self/ref/3.png
deleted file mode 100644
index 3a1010c..0000000
Binary files a/tests/num/self/ref/3.png and /dev/null differ
diff --git a/tests/num/self/ref/4.png b/tests/num/self/ref/4.png
deleted file mode 100644
index dc85780..0000000
Binary files a/tests/num/self/ref/4.png and /dev/null differ
diff --git a/tests/num/self/ref/5.png b/tests/num/self/ref/5.png
deleted file mode 100644
index 776f862..0000000
Binary files a/tests/num/self/ref/5.png and /dev/null differ
diff --git a/tests/num/self/ref/6.png b/tests/num/self/ref/6.png
deleted file mode 100644
index df6d63b..0000000
Binary files a/tests/num/self/ref/6.png and /dev/null differ
diff --git a/tests/num/self/ref/7.png b/tests/num/self/ref/7.png
deleted file mode 100644
index 24aed39..0000000
Binary files a/tests/num/self/ref/7.png and /dev/null differ
diff --git a/tests/num/self/ref/8.png b/tests/num/self/ref/8.png
deleted file mode 100644
index 181f8d2..0000000
Binary files a/tests/num/self/ref/8.png and /dev/null differ
diff --git a/tests/num/self/ref/9.png b/tests/num/self/ref/9.png
deleted file mode 100644
index 70b2f5c..0000000
Binary files a/tests/num/self/ref/9.png and /dev/null differ
diff --git a/tests/num/self/test.typ b/tests/num/self/test.typ
deleted file mode 100644
index 6ea50c8..0000000
--- a/tests/num/self/test.typ
+++ /dev/null
@@ -1,327 +0,0 @@
-#import "/src/zero.typ": *
-#set page(width: auto, height: auto, margin: .5em)
-
-#table(
-  columns: 6,
-  [`num`], num[12.0], num[-2e3], num[0,222], num("2.2+-0.2"), num("2.2+-0.2e1"),
-  [Ref],
-  $12.0$,
-  $-2 times 10^3$,
-  $0.222$,
-  $2.2 plus.minus 0.2$,
-  $(2.2 plus.minus 0.2) times 10^1$,
-)
-
-
-#pagebreak()
-
-// input formats
-
-#num[-2.23] \
-#num(-2.23) \
-#num("-2.23") \
-
-
-
-#pagebreak()
-
-// querbeet
-
-#num("0") \
-#num("-0") \
-#num("45") \
-#num(".23") \
-#num("1.0") \
-#num(".00002") \
-#num("2e4") \
-#num("-3.1e-1") \
-#num("-3.1+-1.1") \
-#num("2+-1e1") \
-
-
-#pagebreak()
-
-// tight
-
-#let tnum = num.with(tight: true)
-#let examples = ("12.2", "2+-3", "4e2", "-2+-1e1")
-#table(
-  columns: 2,
-  stroke: none,
-  [`tight: false`], [`tight: true`],
-  ..array.zip(examples.map(num), examples.map(tnum)).flatten(),
-)
-
-
-
-#pagebreak()
-
-// decimal separator (in- and output)
-
-#num("1.2+-,1") #num("1,2+-.9") \
-#num("2e1.2") #num("2e1,2")
-
-#set-num(decimal-separator: ",")
-#num("1.2+-,1") #num("1,2+-.9") \
-#num("2e1.2") #num("2e1,2")
-#set-num(decimal-separator: ".")
-
-#num("1.234", decimal-separator: ",") \
-#num("1.234", decimal-separator: "__") \
-
-
-
-#pagebreak()
-
-// multiplication symbol
-
-#num("2e9") \
-#num("2e9", product: math.dot) \
-#set-num(product: math.dot)
-#num("2e9") \
-#set-num(product: math.times)
-#num("2e9") \
-
-
-
-#pagebreak()
-
-// unit mantissa
-
-#num("1e9", omit-unity-mantissa: false) \
-#num("1e9", omit-unity-mantissa: true) \
-#num("2e9", omit-unity-mantissa: true) \
-#num("1+-1e9", omit-unity-mantissa: true) \
-#num("1", omit-unity-mantissa: true) \
-#set-num(omit-unity-mantissa: true)
-#num("1e3") \
-#set-num(omit-unity-mantissa: false)
-#num("1e3") \
-
-
-
-#pagebreak()
-
-// implicit plus
-
-#num("1", positive-sign: false)
-#num("1", positive-sign: true)
-#num("-1", positive-sign: false)
-#num("-1", positive-sign: true) \
-#set-num(positive-sign: true)
-#num("9")
-#set-num(positive-sign: false)
-#num("9")
-
-
-
-#pagebreak()
-
-// implicit plus exponent
-
-#num("1e3", positive-sign-exponent: false)
-#num("1e3", positive-sign-exponent: true)
-#num("1e-1", positive-sign-exponent: false)
-#num("1e-1", positive-sign-exponent: true) \
-#set-num(positive-sign-exponent: true)
-#num("1e9")
-#set-num(positive-sign-exponent: false)
-#num("1e9")
-
-
-
-#pagebreak()
-
-// power base
-
-#num("1e2", base: 2) \
-#num("1e2", base: $e$) \
-#num("1e2", base: $π$)
-#set-num(base: "4")
-#num("1e2") \
-#set-num(base: 10)
-#num("1e2")
-
-
-
-#pagebreak()
-
-// uncertainty mode
-
-#let examples = (
-  "1.7+-.2",
-  "1.7+-.02",
-  "1.7+-.28",
-  "1.7+-2.8",
-  "1.7(2)",
-  "1.7(.2)",
-  "1.7(28)",
-  "2.2+.2-.5",
-  "2.2+2-5",
-  "2.2+2-.5",
-  "9.99+2-.5",
-)
-
-#table(
-  columns: 3,
-  align: center,
-  stroke: none,
-  [`separate`], [`compact`], [`compact-separator`],
-  ..array
-    .zip(
-      examples.map(num.with(uncertainty-mode: "separate")),
-      examples.map(num.with(uncertainty-mode: "compact")),
-      examples.map(num.with(uncertainty-mode: "compact-separator")),
-    )
-    .flatten(),
-)
-
-
-
-#pagebreak()
-
-// digit grouping
-
-#num("10.10") \
-#num("123.321") \
-#num("1234.4321") \
-#num("12345.54321") \
-#num("1234567") \
-#set-group(threshold: calc.inf)
-#num("1234567") \
-#set-group(threshold: 3)
-#num("1234.4321") \
-#set-group(separator: "'", size: 2)
-#num("12345.54321") \
-#set-group(separator: sym.space.thin, size: 3, threshold: 5)
-
-
-
-#pagebreak()
-
-// rounding
-
-#num("1.234") \
-#set-round(mode: "places", precision: 2)
-#num("1.234") \
-#num("1.236") \
-#set-round(pad: false)
-#num("1.1") \
-#set-round(pad: true)
-#num("1.1") \
-#set-round(direction: "towards-negative-infinity")
-#num("1.199") \
-#set-round(direction: "towards-infinity")
-#num("1.192") \
-#num("1.190") \
-#set-round(direction: "nearest")
-
-#set-round(mode: "figures", precision: 2)
-#num("1.27") \
-#num("0.00001227") \
-#num("9876") \
-#num("9976") \
-
-#set-round(mode: "uncertainty", precision: 1)
-#num("1.234(34)") \
-#num("8.8+-2") \
-
-#set-round(mode: "places")
-#num(round: (precision: none), "1.234")
-#set-round(precision: none)
-
-#num(round: (precision: 0, ties: "to-odd"))[.5]
-
-
-
-#pagebreak()
-
-// digits
-
-#num("1.234", digits: 2) \
-#num("1.2", digits: 2)
-
-
-
-#pagebreak()
-
-// fixed exponent
-
-#num("1.234", exponent: (fixed: -2)) \
-#num("1.234", exponent: (fixed: 1)) \
-#num("1e4", exponent: (fixed: 1)) \
-#num("1e-4", exponent: (fixed: -1)) \
-#num("2+-1", exponent: (fixed: 1)) \
-#num("2+-1e1", exponent: (fixed: 2)) \
-
-
-
-#pagebreak()
-
-// combine positive-sign and omit-unity-mantissa
-#num("1e3", positive-sign: true, omit-unity-mantissa: true) \
-#num("-1e3", positive-sign: true, omit-unity-mantissa: true) \
-
-// combine "compact" and exponential
-#num("2.1+-.2e1", uncertainty-mode: "compact") \
-#num("2.1+.2-.2e1", uncertainty-mode: "separate")
-
-
-#pagebreak()
-
-// content input
-
-#num[.1]
-#num[,1]
-#num[2e-1,2]
-
-#pagebreak()
-
-// Mode math: false
-
-#[
-  #show math.equation: set text(2pt)
-  #num(math: false)[2,3+-23e2]\
-  #num(math: false, product: sym.dot)[2,3+.3-.4e2]
-]
-
-#pagebreak()
-
-// num with manual state
-
-#[
-  #let state = impl.default-state
-  #{ state.decimal-separator = "," }
-  #let num = num.with(state: state)
-  #num[2.34]
-]
-
-#pagebreak()
-
-// num with array input
-
-#context {
-  num(("1", "2")).join(" ")
-}
-
-#pagebreak()
-
-// num with state input
-
-#context {
-  let state = impl.num-state.get()
-  num("1", state: state)
-  [ ]
-  num("2", state: state)
-}
-
-#pagebreak()
-
-#num(
-  group: (threshold: (fractional: 3, integer: calc.inf)),
-  [23232.2323],
-) \
-#num(
-  group: (threshold: (integer: 3, fractional: calc.inf)),
-  [23232.2323],
-)
diff --git a/tests/num/uncertainty/.gitignore b/tests/num/uncertainty/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/num/uncertainty/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/num/uncertainty/ref.typ b/tests/num/uncertainty/ref.typ
new file mode 100644
index 0000000..32d5591
--- /dev/null
+++ b/tests/num/uncertainty/ref.typ
@@ -0,0 +1,65 @@
+#set page(width: auto, height: auto, margin: 2pt)
+#import "/src/formatting.typ": non-math-attach
+
+
+
+#table(
+  columns: 3,
+  align: center,
+  stroke: none,
+  [`separate`], [`compact`], [`compact-separator`],
+  $1.7±0.2$, $1.7(2)$, $1.7(2)$,
+  $1.70±0.02$, $1.70(2)$, $1.70(2)$,
+  $1.70±0.28$, $1.70(28)$, $1.70(28)$,
+  $1.7±2.8$, $1.7(28)$, $1.7(2.8)$,
+
+  $1.7±0.2$, $1.7(2)$, $1.7(2)$,
+  $1.70±0.02$, $1.70(2)$, $1.70(2)$,
+  $1.7±2.8$, $1.7(28)$, $1.7(2.8)$,
+
+  $2.2^(+0.2)_(-0.5)$, $2.2^(+2)_(-5)$, $2.2^(+2)_(-5)$,
+  $2.2^(+2.0)_(-5.0)$, $2.2^(+20)_(-50)$, $2.2^(+2.0)_(-5.0)$,
+  $2.2^(+2.0)_(-0.5)$, $2.2^(+20)_(-5)$, $2.2^(+2.0)_(-0.5)$,
+  $9.99^(+2.00)_(-0.50)$, $9.99^(+200)_(-50)$, $9.99^(+2.00)_(-0.50)$,
+)
+
+
+#pagebreak()
+
+
+
+#let th = sym.space.thin
+
+#context table(
+  columns: 3,
+  align: center,
+  stroke: none,
+  [`separate`], [`compact`], [`compact-separator`],
+  [1.7#th;±#th;0.2], [1.7(2)], [1.7(2)],
+  [1.70#th;±#th;0.02], [1.70(2)], [1.70(2)],
+  [1.70#th;±#th;0.28], [1.70(28)], [1.70(28)],
+  [1.7#th;±#th;2.8], [1.7(28)], [1.7(2.8)],
+
+  [1.7#th;±#th;0.2], [1.7(2)], [1.7(2)],
+  [1.70#th;±#th;0.02], [1.70(2)], [1.70(2)],
+  [1.7#th;±#th;2.8], [1.7(28)], [1.7(2.8)],
+
+  non-math-attach([2.2], t: [+0.2], b: [-0.5]), 
+  non-math-attach([2.2], t: [+2], b: [-5]), 
+  non-math-attach([2.2], t: [+2], b: [-5]),
+  non-math-attach([2.2], t: [+2.0], b: [-5.0]), 
+  non-math-attach([2.2], t: [+20], b: [-50]), 
+  non-math-attach([2.2], t: [+2.0], b: [-5.0]),
+  non-math-attach([2.2], t: [+2.0], b: [-0.5]), 
+  non-math-attach([2.2], t: [+20], b: [-5]), 
+  non-math-attach([2.2], t: [+2.0], b: [-0.5]),
+  non-math-attach([9.99], t: [+2.00], b: [-0.50]), 
+  non-math-attach([9.99], t: [+200], b: [-50]), 
+  non-math-attach([9.99], t: [+2.00], b: [-0.50]),
+)
+
+#pagebreak()
+
+$(2.1plus.minus 0.2)×10^1$ \
+$2.1(2)×10^1$ \
+$\(2.1^(+0.2)_(-0.2)\)×10^1$ \
diff --git a/tests/num/uncertainty/test.typ b/tests/num/uncertainty/test.typ
new file mode 100644
index 0000000..aafe232
--- /dev/null
+++ b/tests/num/uncertainty/test.typ
@@ -0,0 +1,67 @@
+#import "/src/zero.typ": *
+#set page(width: auto, height: auto, margin: 2pt)
+
+
+
+
+// uncertainty mode
+
+#let examples = (
+  "1.7+-.2",
+  "1.7+-.02",
+  "1.7+-.28",
+  "1.7+-2.8",
+  "1.7(2)",
+  "1.7(.2)",
+  "1.7(28)",
+  "2.2+.2-.5",
+  "2.2+2-5",
+  "2.2+2-.5",
+  "9.99+2-.5",
+)
+
+#table(
+  columns: 3,
+  align: center,
+  stroke: none,
+  [`separate`], [`compact`], [`compact-separator`],
+  ..array
+    .zip(
+      examples.map(num.with(uncertainty-mode: "separate")),
+      examples.map(num.with(uncertainty-mode: "compact")),
+      examples.map(num.with(uncertainty-mode: "compact-separator")),
+    )
+    .flatten(),
+)
+
+
+#pagebreak()
+
+
+#set-num(math: false)
+
+
+#table(
+  columns: 3,
+  align: center,
+  stroke: none,
+  [`separate`], [`compact`], [`compact-separator`],
+  ..array
+    .zip(
+      examples.map(num.with(uncertainty-mode: "separate")),
+      examples.map(num.with(uncertainty-mode: "compact")),
+      examples.map(num.with(uncertainty-mode: "compact-separator")),
+    )
+    .flatten(),
+)
+
+
+#pagebreak()
+
+
+#set-num(math: true)
+
+// combine "compact" and exponential
+#num("2.1+-.2e1", uncertainty-mode: "separate") \
+#num("2.1+-.2e1", uncertainty-mode: "compact") \
+#num("2.1+.2-.2e1", uncertainty-mode: "separate")
diff --git a/tests/rounding/ref.typ b/tests/rounding/ref.typ
deleted file mode 100644
index 17c3051..0000000
--- a/tests/rounding/ref.typ
+++ /dev/null
@@ -1,14 +0,0 @@
-
-#set page(width: auto, height: auto, margin: .5em)
-
-
-$0.000$ \
-$0.000$ \
-$0$ \
-$0.000$ \
-
-#pagebreak()
-
-$423.4×10^2$ \
-$4.2×10^4$ \
-$42×10^3$ \
diff --git a/tests/rtl/.gitignore b/tests/rtl/.gitignore
new file mode 100644
index 0000000..2e4c5d8
--- /dev/null
+++ b/tests/rtl/.gitignore
@@ -0,0 +1,5 @@
+# generated by tytanic, do not edit
+
+/diff/
+/out/
+/ref/
diff --git a/tests/rtl/ref.typ b/tests/rtl/ref.typ
new file mode 100644
index 0000000..005f68a
--- /dev/null
+++ b/tests/rtl/ref.typ
@@ -0,0 +1,7 @@
+#set page(width: auto, height: auto, margin: .5em)
+
+#set text(dir: rtl)
+
+#let th = sym.space.thin
+$1,#h(0pt)2$ \
+$"N"th"A"^(-2)th 2.1$
\ No newline at end of file
diff --git a/tests/rtl/ref/1.png b/tests/rtl/ref/1.png
deleted file mode 100644
index ebdc61b..0000000
Binary files a/tests/rtl/ref/1.png and /dev/null differ
diff --git a/tests/rtl/test.typ b/tests/rtl/test.typ
index ee72054..e48678c 100644
--- a/tests/rtl/test.typ
+++ b/tests/rtl/test.typ
@@ -4,4 +4,5 @@
 
 #set text(dir: rtl)
 
-#num(decimal-separator: ",")[1,2]
+#num(decimal-separator: ",")[1,2] \
+#zi.N-A2[2.1]
diff --git a/tests/table/ref/1.png b/tests/table/format/ref/1.png
similarity index 100%
rename from tests/table/ref/1.png
rename to tests/table/format/ref/1.png
diff --git a/tests/table/ref/2.png b/tests/table/format/ref/2.png
similarity index 100%
rename from tests/table/ref/2.png
rename to tests/table/format/ref/2.png
diff --git a/tests/table/ref/3.png b/tests/table/format/ref/3.png
similarity index 100%
rename from tests/table/ref/3.png
rename to tests/table/format/ref/3.png
diff --git a/tests/table/ref/4.png b/tests/table/format/ref/4.png
similarity index 100%
rename from tests/table/ref/4.png
rename to tests/table/format/ref/4.png
diff --git a/tests/table/ref/5.png b/tests/table/format/ref/5.png
similarity index 100%
rename from tests/table/ref/5.png
rename to tests/table/format/ref/5.png
diff --git a/tests/table/ref/6.png b/tests/table/format/ref/6.png
similarity index 100%
rename from tests/table/ref/6.png
rename to tests/table/format/ref/6.png
diff --git a/tests/table/ref/7.png b/tests/table/format/ref/7.png
similarity index 100%
rename from tests/table/ref/7.png
rename to tests/table/format/ref/7.png
diff --git a/tests/table/ref/8.png b/tests/table/format/ref/8.png
similarity index 100%
rename from tests/table/ref/8.png
rename to tests/table/format/ref/8.png
diff --git a/tests/table/test.typ b/tests/table/format/test.typ
similarity index 100%
rename from tests/table/test.typ
rename to tests/table/format/test.typ
diff --git a/tests/nonum/ref/1.png b/tests/table/nonum/ref/1.png
similarity index 100%
rename from tests/nonum/ref/1.png
rename to tests/table/nonum/ref/1.png
diff --git a/tests/nonum/test.typ b/tests/table/nonum/test.typ
similarity index 100%
rename from tests/nonum/test.typ
rename to tests/table/nonum/test.typ
diff --git a/tests/zi/basic/ref.typ b/tests/zi/basic/ref.typ
new file mode 100644
index 0000000..daf0c09
--- /dev/null
+++ b/tests/zi/basic/ref.typ
@@ -0,0 +1,85 @@
+#set page(width: auto, height: auto, margin: .5em)
+#set table(stroke: none)
+
+
+
+#let th = sym.space.thin
+
+$12th"N"$ \
+$12th"m"th"s"^(-1)$ \
+$12th"kg"$ \
+$23th"cd"$ \
+$23#sym.prime$ \
+$23#sym.prime.double$ \
+$23th"kN"$ \
+$45°$ \
+$2th"s"^(-1)$ \
+$"kN"$ \
+$1/"s"$ \
+$1\/"s"$ \
+$12th"µm"$ \
+
+#pagebreak()
+
+$"kg"th"m"$ \
+$2th"kg"th"m"$ \
+
+#pagebreak()
+
+
+#table(
+  columns: 2,
+  $"V""·""m""·""s"^(-1)$,
+  $1.2th"V""·""m""·""s"^(-1)$,
+  $("V"th"m")/"s"$,
+  $1.2th ("V"th"m")/"s"$,
+  $"V"th"m"\/"s"$,
+  $1.2th"V"th"m"\/"s"$,
+  $"V""·""m"\/"s"$,
+  $1.2th"V""·""m"\/"s"$,
+  $("V""·""m")/"s"$,
+  $1.2th ("V""·""m")/"s"$,
+)
+
+
+#pagebreak()
+
+
+#table(
+  columns: 2,
+  $"kg""·""m"$, 
+  $2th"kg""·""m"$, 
+  $"kg""·""m"$, 
+  $2th"kg""·""m"$, 
+  $"kg""·""m"$, 
+  $2th"kg""·""m"$, 
+)
+
+#pagebreak()
+
+$(2plus.minus 2)th"m"th"s"^(-1)$ \
+$(2plus.minus 2)×10^3th"m"th"s"^(-1)$ \
+$2(1)th"m"th"s"^(-1)$ \
+$2(1)th"m"th"s"^(-1)$ \
+$(0.20plus.minus 0.11)×10^1th"m"th"s"^(-1)$ \
+
+#pagebreak()
+
+#set super(typographic: false)
+2#th;m \
+2#th;m#th;s#super[-1] \
+2#th;m/s \
+2#th;m#th;s#super[-1]#th;V#super[-2] \
+2#th;m/(s#th;V#super[2]) \
+
+#pagebreak()
+
+$"m"\/"s"$ \
+$"m"^3th√"b"th"c"^(-0.5)$ \
+$("m"^3th√"b")/√"c"$ \
+$"m"^3th√"b"\/√"c"$ \
+
+#pagebreak()
+
+1#th;m \
+m \
diff --git a/tests/zi/basic/ref/1.png b/tests/zi/basic/ref/1.png
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diff --git a/tests/zi/basic/ref/2.png b/tests/zi/basic/ref/2.png
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diff --git a/tests/zi/basic/ref/3.png b/tests/zi/basic/ref/3.png
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diff --git a/tests/zi/basic/ref/4.png b/tests/zi/basic/ref/4.png
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diff --git a/tests/zi/basic/ref/5.png b/tests/zi/basic/ref/5.png
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diff --git a/tests/zi/basic/ref/6.png b/tests/zi/basic/ref/6.png
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diff --git a/tests/zi/basic/ref/7.png b/tests/zi/basic/ref/7.png
deleted file mode 100644
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diff --git a/tests/zi/basic/ref/8.png b/tests/zi/basic/ref/8.png
deleted file mode 100644
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diff --git a/tests/zi/basic/ref/9.png b/tests/zi/basic/ref/9.png
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diff --git a/tests/zi/basic/test.typ b/tests/zi/basic/test.typ
index a8c8854..828450b 100644
--- a/tests/zi/basic/test.typ
+++ b/tests/zi/basic/test.typ
@@ -14,25 +14,20 @@
 #zi.degree[45] \
 // #zi.liter-l[1] \
 #zi.declare("1/s")([2]) \
-
-#zi.kN() // later make them types maybe? Then we can just call #zi.kN, that looks much better
-
-#zi.declare("1/s")(fraction: "fraction")
-#zi.declare("1/s")(fraction: "inline")
-
+#zi.kN() \ // later make them types maybe? Then we can just call #zi.kN, that looks much better
+#zi.declare("1/s")(fraction: "fraction") \
+#zi.declare("1/s")(fraction: "inline") \
 #let um = zi.declare("mum")
 #um[12]
 
 
 #pagebreak()
 
-// #set page(width: 4cm)
 
 // Unit declaration
 #let kgm-s2 = zi.declare("kg m/s^2")
 #let kgm-s2 = zi.declare("kg m")
 #kgm-s2() \
-$"kg" thin "m"$ \
 #kgm-s2[2]
 
 
@@ -69,25 +64,15 @@ $"kg" thin "m"$ \
 
 
 
-#set page(width: 2cm)
-Hello #zi.m-s[2.2]
-
-Hello #zi.m-s(breakable: true)[2.2]
-
-A #kgm-s2()
-A #kgm-s2(breakable: true)
-
 
 #pagebreak()
 
 #set page(width: auto)
-#table(
-  zi.m-s("2+-2"),
-  zi.m-s("2+-2e3"),
-  zi.m-s(uncertainty-mode: "compact", "2+-1"),
-  zi.m-s(uncertainty-mode: "compact-separator", "2+-1"),
-  zi.m-s(exponent: (fixed: 1), "2+-1.1"),
-)
+#zi.m-s("2+-2") \
+#zi.m-s("2+-2e3") \
+#zi.m-s(uncertainty-mode: "compact", "2+-1") \
+#zi.m-s(uncertainty-mode: "compact-separator", "2+-1") \
+#zi.m-s(exponent: (fixed: 1), "2+-1.1") \
 
 #pagebreak()
 
@@ -95,23 +80,20 @@ A #kgm-s2(breakable: true)
 
 #let m-s-V = zi.declare("m/s/V^2")
 
-#table(
-  zi.m(fraction: "power", math: false)[2],
-  zi.m-s(fraction: "power", math: false)[2],
-  zi.m-s(fraction: "inline", math: false)[2],
-  m-s-V(fraction: "power", math: false)[2],
-  m-s-V(fraction: "inline", math: false)[2],
-)
+
+#zi.m(fraction: "power", math: false)[2] \
+#zi.m-s(fraction: "power", math: false)[2] \
+#zi.m-s(fraction: "inline", math: false)[2] \
+#m-s-V(fraction: "power", math: false)[2] \
+#m-s-V(fraction: "inline", math: false)[2] \
 
 #pagebreak()
 
 #set-unit(use-sqrt: true, fraction: "inline")
-#zi.m-s()
-#table(
-  zi.declare("m^3 b^0.5/c^0.5")(fraction: "power"),
-  zi.declare("m^3 b^0.5/c^0.5")(fraction: "fraction"),
-  zi.declare("m^3 b^0.5/c^0.5")(fraction: "inline"),
-)
+#zi.m-s() \
+#zi.declare("m^3 b^0.5/c^0.5")(fraction: "power") \
+#zi.declare("m^3 b^0.5/c^0.5")(fraction: "fraction") \
+#zi.declare("m^3 b^0.5/c^0.5")(fraction: "inline") \
 
 #pagebreak()