diff --git a/library/src/base/calc.rs b/library/src/base/calc.rs
index db40df061..3541e08cd 100644
--- a/library/src/base/calc.rs
+++ b/library/src/base/calc.rs
@@ -2,35 +2,6 @@ use std::cmp::Ordering;
 
 use crate::prelude::*;
 
-/// Convert a value to an integer.
-pub fn int(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let Spanned { v, span } = args.expect("value")?;
-    Ok(Value::Int(match v {
-        Value::Bool(v) => v as i64,
-        Value::Int(v) => v,
-        Value::Float(v) => v as i64,
-        Value::Str(v) => match v.parse() {
-            Ok(v) => v,
-            Err(_) => bail!(span, "invalid integer"),
-        },
-        v => bail!(span, "cannot convert {} to integer", v.type_name()),
-    }))
-}
-
-/// Convert a value to a float.
-pub fn float(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let Spanned { v, span } = args.expect("value")?;
-    Ok(Value::Float(match v {
-        Value::Int(v) => v as f64,
-        Value::Float(v) => v,
-        Value::Str(v) => match v.parse() {
-            Ok(v) => v,
-            Err(_) => bail!(span, "invalid float"),
-        },
-        v => bail!(span, "cannot convert {} to float", v.type_name()),
-    }))
-}
-
 /// The absolute value of a numeric value.
 pub fn abs(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     let Spanned { v, span } = args.expect("numeric value")?;
@@ -115,28 +86,3 @@ pub fn mod_(_: &Vm, args: &mut Args) -> SourceResult<Value> {
 
     Ok(Value::Float(a % b))
 }
-
-/// Create a sequence of numbers.
-pub fn range(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let first = args.expect::<i64>("end")?;
-    let (start, end) = match args.eat::<i64>()? {
-        Some(second) => (first, second),
-        None => (0, first),
-    };
-
-    let step: i64 = match args.named("step")? {
-        Some(Spanned { v: 0, span }) => bail!(span, "step must not be zero"),
-        Some(Spanned { v, .. }) => v,
-        None => 1,
-    };
-
-    let mut x = start;
-    let mut seq = vec![];
-
-    while x.cmp(&end) == 0.cmp(&step) {
-        seq.push(Value::Int(x));
-        x += step;
-    }
-
-    Ok(Value::Array(Array::from_vec(seq)))
-}
diff --git a/library/src/base/color.rs b/library/src/base/color.rs
deleted file mode 100644
index 2db41ebfb..000000000
--- a/library/src/base/color.rs
+++ /dev/null
@@ -1,64 +0,0 @@
-use std::str::FromStr;
-
-use crate::prelude::*;
-
-/// Create a grayscale color.
-pub fn luma(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let Component(luma) = args.expect("gray component")?;
-    Ok(Value::Color(LumaColor::new(luma).into()))
-}
-
-/// Create an RGB(A) color.
-pub fn rgb(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    Ok(Value::Color(if let Some(string) = args.find::<Spanned<EcoString>>()? {
-        match RgbaColor::from_str(&string.v) {
-            Ok(color) => color.into(),
-            Err(msg) => bail!(string.span, msg),
-        }
-    } else {
-        let Component(r) = args.expect("red component")?;
-        let Component(g) = args.expect("green component")?;
-        let Component(b) = args.expect("blue component")?;
-        let Component(a) = args.eat()?.unwrap_or(Component(255));
-        RgbaColor::new(r, g, b, a).into()
-    }))
-}
-
-/// Create a CMYK color.
-pub fn cmyk(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let RatioComponent(c) = args.expect("cyan component")?;
-    let RatioComponent(m) = args.expect("magenta component")?;
-    let RatioComponent(y) = args.expect("yellow component")?;
-    let RatioComponent(k) = args.expect("key component")?;
-    Ok(Value::Color(CmykColor::new(c, m, y, k).into()))
-}
-
-/// An integer or ratio component.
-struct Component(u8);
-
-castable! {
-    Component,
-    Expected: "integer or ratio",
-    Value::Int(v) => match v {
-        0 ..= 255 => Self(v as u8),
-        _ => Err("must be between 0 and 255")?,
-    },
-    Value::Ratio(v) => if (0.0 ..= 1.0).contains(&v.get()) {
-        Self((v.get() * 255.0).round() as u8)
-    } else {
-        Err("must be between 0% and 100%")?
-    },
-}
-
-/// A component that must be a ratio.
-struct RatioComponent(u8);
-
-castable! {
-    RatioComponent,
-    Expected: "ratio",
-    Value::Ratio(v) => if (0.0 ..= 1.0).contains(&v.get()) {
-        Self((v.get() * 255.0).round() as u8)
-    } else {
-        Err("must be between 0% and 100%")?
-    },
-}
diff --git a/library/src/base/create.rs b/library/src/base/create.rs
new file mode 100644
index 000000000..be8e822fe
--- /dev/null
+++ b/library/src/base/create.rs
@@ -0,0 +1,149 @@
+use std::str::FromStr;
+
+use typst::model::Regex;
+
+use crate::prelude::*;
+
+/// Convert a value to an integer.
+pub fn int(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let Spanned { v, span } = args.expect("value")?;
+    Ok(Value::Int(match v {
+        Value::Bool(v) => v as i64,
+        Value::Int(v) => v,
+        Value::Float(v) => v as i64,
+        Value::Str(v) => match v.parse() {
+            Ok(v) => v,
+            Err(_) => bail!(span, "invalid integer"),
+        },
+        v => bail!(span, "cannot convert {} to integer", v.type_name()),
+    }))
+}
+
+/// Convert a value to a float.
+pub fn float(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let Spanned { v, span } = args.expect("value")?;
+    Ok(Value::Float(match v {
+        Value::Int(v) => v as f64,
+        Value::Float(v) => v,
+        Value::Str(v) => match v.parse() {
+            Ok(v) => v,
+            Err(_) => bail!(span, "invalid float"),
+        },
+        v => bail!(span, "cannot convert {} to float", v.type_name()),
+    }))
+}
+
+/// Create a grayscale color.
+pub fn luma(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let Component(luma) = args.expect("gray component")?;
+    Ok(Value::Color(LumaColor::new(luma).into()))
+}
+
+/// Create an RGB(A) color.
+pub fn rgb(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    Ok(Value::Color(if let Some(string) = args.find::<Spanned<EcoString>>()? {
+        match RgbaColor::from_str(&string.v) {
+            Ok(color) => color.into(),
+            Err(msg) => bail!(string.span, msg),
+        }
+    } else {
+        let Component(r) = args.expect("red component")?;
+        let Component(g) = args.expect("green component")?;
+        let Component(b) = args.expect("blue component")?;
+        let Component(a) = args.eat()?.unwrap_or(Component(255));
+        RgbaColor::new(r, g, b, a).into()
+    }))
+}
+
+/// Create a CMYK color.
+pub fn cmyk(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let RatioComponent(c) = args.expect("cyan component")?;
+    let RatioComponent(m) = args.expect("magenta component")?;
+    let RatioComponent(y) = args.expect("yellow component")?;
+    let RatioComponent(k) = args.expect("key component")?;
+    Ok(Value::Color(CmykColor::new(c, m, y, k).into()))
+}
+
+/// An integer or ratio component.
+struct Component(u8);
+
+castable! {
+    Component,
+    Expected: "integer or ratio",
+    Value::Int(v) => match v {
+        0 ..= 255 => Self(v as u8),
+        _ => Err("must be between 0 and 255")?,
+    },
+    Value::Ratio(v) => if (0.0 ..= 1.0).contains(&v.get()) {
+        Self((v.get() * 255.0).round() as u8)
+    } else {
+        Err("must be between 0% and 100%")?
+    },
+}
+
+/// A component that must be a ratio.
+struct RatioComponent(u8);
+
+castable! {
+    RatioComponent,
+    Expected: "ratio",
+    Value::Ratio(v) => if (0.0 ..= 1.0).contains(&v.get()) {
+        Self((v.get() * 255.0).round() as u8)
+    } else {
+        Err("must be between 0% and 100%")?
+    },
+}
+
+/// Convert a value to a string.
+pub fn str(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let Spanned { v, span } = args.expect("value")?;
+    Ok(Value::Str(match v {
+        Value::Int(v) => format_str!("{}", v),
+        Value::Float(v) => format_str!("{}", v),
+        Value::Label(label) => label.0.into(),
+        Value::Str(v) => v,
+        v => bail!(span, "cannot convert {} to string", v.type_name()),
+    }))
+}
+
+/// Create a blind text string.
+pub fn lorem(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let words: usize = args.expect("number of words")?;
+    Ok(Value::Str(lipsum::lipsum(words).into()))
+}
+
+/// Create a label from a string.
+pub fn label(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    Ok(Value::Label(Label(args.expect("string")?)))
+}
+
+/// Create a regular expression from a string.
+pub fn regex(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let Spanned { v, span } = args.expect::<Spanned<EcoString>>("regular expression")?;
+    Ok(Regex::new(&v).at(span)?.into())
+}
+
+/// Create an array consisting of a sequence of numbers.
+pub fn range(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let first = args.expect::<i64>("end")?;
+    let (start, end) = match args.eat::<i64>()? {
+        Some(second) => (first, second),
+        None => (0, first),
+    };
+
+    let step: i64 = match args.named("step")? {
+        Some(Spanned { v: 0, span }) => bail!(span, "step must not be zero"),
+        Some(Spanned { v, .. }) => v,
+        None => 1,
+    };
+
+    let mut x = start;
+    let mut seq = vec![];
+
+    while x.cmp(&end) == 0.cmp(&step) {
+        seq.push(Value::Int(x));
+        x += step;
+    }
+
+    Ok(Value::Array(Array::from_vec(seq)))
+}
diff --git a/library/src/base/mod.rs b/library/src/base/mod.rs
index 86ebd6665..501edd712 100644
--- a/library/src/base/mod.rs
+++ b/library/src/base/mod.rs
@@ -1,14 +1,14 @@
 //! Foundational functions.
 
 mod calc;
-mod color;
+mod create;
 mod data;
-mod string;
+mod numbering;
 
 pub use self::calc::*;
-pub use self::color::*;
+pub use self::create::*;
 pub use self::data::*;
-pub use self::string::*;
+pub use self::numbering::*;
 
 use comemo::Track;
 use typst::model::{self, Route, Vm};
@@ -21,6 +21,11 @@ pub fn type_(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     Ok(args.expect::<Value>("value")?.type_name().into())
 }
 
+/// The string representation of a value.
+pub fn repr(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    Ok(args.expect::<Value>("value")?.repr().into())
+}
+
 /// Ensure that a condition is fulfilled.
 pub fn assert(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     let Spanned { v, span } = args.expect::<Spanned<bool>>("condition")?;
diff --git a/library/src/shared/numbering.rs b/library/src/base/numbering.rs
similarity index 92%
rename from library/src/shared/numbering.rs
rename to library/src/base/numbering.rs
index 739edafe1..ea45fbc6d 100644
--- a/library/src/shared/numbering.rs
+++ b/library/src/base/numbering.rs
@@ -1,9 +1,16 @@
 use std::str::FromStr;
 
-use typst::model::{castable, Value};
-use typst::util::{format_eco, EcoString};
 use unscanny::Scanner;
 
+use crate::prelude::*;
+
+/// Apply a numbering pattern to a number.
+pub fn numbering(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let number = args.expect::<usize>("number")?;
+    let pattern = args.expect::<NumberingPattern>("pattern")?;
+    Ok(Value::Str(pattern.apply(number).into()))
+}
+
 /// A numbering pattern for lists or headings.
 #[derive(Debug, Clone, Eq, PartialEq, Hash)]
 pub struct NumberingPattern {
@@ -129,7 +136,7 @@ impl NumberingKind {
                     return '-'.into();
                 }
 
-                const SYMBOLS: &[char] = &['*', '†', '‡', '§', '‖', '¶'];
+                const SYMBOLS: &[char] = &['*', '†', '‡', '§', '¶', '‖'];
                 let symbol = SYMBOLS[(n - 1) % SYMBOLS.len()];
                 let amount = ((n - 1) / SYMBOLS.len()) + 1;
                 std::iter::repeat(symbol).take(amount).collect()
diff --git a/library/src/base/string.rs b/library/src/base/string.rs
deleted file mode 100644
index 9c3b95625..000000000
--- a/library/src/base/string.rs
+++ /dev/null
@@ -1,58 +0,0 @@
-use typst::model::Regex;
-
-use crate::prelude::*;
-use crate::shared::NumberingKind;
-
-/// The string representation of a value.
-pub fn repr(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    Ok(args.expect::<Value>("value")?.repr().into())
-}
-
-/// Convert a value to a string.
-pub fn str(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let Spanned { v, span } = args.expect("value")?;
-    Ok(Value::Str(match v {
-        Value::Int(v) => format_str!("{}", v),
-        Value::Float(v) => format_str!("{}", v),
-        Value::Label(label) => label.0.into(),
-        Value::Str(v) => v,
-        v => bail!(span, "cannot convert {} to string", v.type_name()),
-    }))
-}
-
-/// Create a label from a string.
-pub fn label(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    Ok(Value::Label(Label(args.expect("string")?)))
-}
-
-/// Create blind text.
-pub fn lorem(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let words: usize = args.expect("number of words")?;
-    Ok(Value::Str(lipsum::lipsum(words).into()))
-}
-
-/// Create a regular expression.
-pub fn regex(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let Spanned { v, span } = args.expect::<Spanned<EcoString>>("regular expression")?;
-    Ok(Regex::new(&v).at(span)?.into())
-}
-
-/// Converts an integer into one or multiple letters.
-pub fn letter(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    numbered(NumberingKind::Letter, args)
-}
-
-/// Converts an integer into a roman numeral.
-pub fn roman(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    numbered(NumberingKind::Roman, args)
-}
-
-/// Convert a number into a symbol.
-pub fn symbol(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    numbered(NumberingKind::Symbol, args)
-}
-
-fn numbered(numbering: NumberingKind, args: &mut Args) -> SourceResult<Value> {
-    let n = args.expect::<usize>("non-negative integer")?;
-    Ok(Value::Str(numbering.apply(n).into()))
-}
diff --git a/library/src/lib.rs b/library/src/lib.rs
index 11baacc37..6107cf42d 100644
--- a/library/src/lib.rs
+++ b/library/src/lib.rs
@@ -88,28 +88,26 @@ fn scope() -> Scope {
 
     // Base.
     std.def_fn("type", base::type_);
+    std.def_fn("repr", base::repr);
     std.def_fn("assert", base::assert);
     std.def_fn("eval", base::eval);
     std.def_fn("int", base::int);
     std.def_fn("float", base::float);
+    std.def_fn("luma", base::luma);
+    std.def_fn("rgb", base::rgb);
+    std.def_fn("cmyk", base::cmyk);
+    std.def_fn("str", base::str);
+    std.def_fn("lorem", base::lorem);
+    std.def_fn("label", base::label);
+    std.def_fn("regex", base::regex);
+    std.def_fn("range", base::range);
+    std.def_fn("numbering", base::numbering);
     std.def_fn("abs", base::abs);
     std.def_fn("min", base::min);
     std.def_fn("max", base::max);
     std.def_fn("even", base::even);
     std.def_fn("odd", base::odd);
     std.def_fn("mod", base::mod_);
-    std.def_fn("range", base::range);
-    std.def_fn("luma", base::luma);
-    std.def_fn("rgb", base::rgb);
-    std.def_fn("cmyk", base::cmyk);
-    std.def_fn("repr", base::repr);
-    std.def_fn("str", base::str);
-    std.def_fn("label", base::label);
-    std.def_fn("regex", base::regex);
-    std.def_fn("letter", base::letter);
-    std.def_fn("roman", base::roman);
-    std.def_fn("symbol", base::symbol);
-    std.def_fn("lorem", base::lorem);
     std.def_fn("csv", base::csv);
     std.def_fn("json", base::json);
     std.def_fn("xml", base::xml);
diff --git a/library/src/shared/mod.rs b/library/src/shared/mod.rs
index 55522190f..f54241cfc 100644
--- a/library/src/shared/mod.rs
+++ b/library/src/shared/mod.rs
@@ -2,8 +2,6 @@
 
 mod behave;
 mod ext;
-mod numbering;
 
 pub use behave::*;
 pub use ext::*;
-pub use numbering::*;
diff --git a/library/src/structure/list.rs b/library/src/structure/list.rs
index d1727087d..462e0c32e 100644
--- a/library/src/structure/list.rs
+++ b/library/src/structure/list.rs
@@ -1,6 +1,6 @@
+use crate::base::NumberingPattern;
 use crate::layout::{BlockNode, GridNode, HNode, Spacing, TrackSizing};
 use crate::prelude::*;
-use crate::shared::NumberingPattern;
 use crate::text::{ParNode, SpaceNode, TextNode};
 
 /// An unordered (bulleted) or ordered (numbered) list.
diff --git a/src/model/methods.rs b/src/model/methods.rs
index c5c12ed24..fc33bea97 100644
--- a/src/model/methods.rs
+++ b/src/model/methods.rs
@@ -17,6 +17,13 @@ pub fn call(
     let missing = || Err(missing_method(name, method)).at(span);
 
     let output = match value {
+        Value::Color(color) => match method {
+            "lighten" => Value::Color(color.lighten(args.expect("amount")?)),
+            "darken" => Value::Color(color.darken(args.expect("amount")?)),
+            "negate" => Value::Color(color.negate()),
+            _ => return missing(),
+        },
+
         Value::Str(string) => match method {
             "len" => Value::Int(string.len() as i64),
             "slice" => {
@@ -108,13 +115,6 @@ pub fn call(
             _ => return missing(),
         },
 
-        Value::Color(color) => match method {
-            "lighten" => Value::Color(color.lighten(args.expect("amount")?)),
-            "darken" => Value::Color(color.darken(args.expect("amount")?)),
-            "negate" => Value::Color(color.negate()),
-            _ => return missing(),
-        },
-
         _ => return missing(),
     };
 
diff --git a/tests/ref/base/numbering.png b/tests/ref/base/numbering.png
index d4d575d91..aa34de296 100644
Binary files a/tests/ref/base/numbering.png and b/tests/ref/base/numbering.png differ
diff --git a/tests/ref/base/string.png b/tests/ref/base/string.png
deleted file mode 100644
index 021843163..000000000
Binary files a/tests/ref/base/string.png and /dev/null differ
diff --git a/tests/typ/base/color.typ b/tests/typ/base/color.typ
index 96d760634..aecd86b88 100644
--- a/tests/typ/base/color.typ
+++ b/tests/typ/base/color.typ
@@ -1,4 +1,4 @@
-// Test color creation functions.
+// Test color creation functions and modification methods.
 // Ref: false
 
 ---
diff --git a/tests/typ/base/numbering.typ b/tests/typ/base/numbering.typ
new file mode 100644
index 000000000..200850bcd
--- /dev/null
+++ b/tests/typ/base/numbering.typ
@@ -0,0 +1,13 @@
+// Test integrated numbering patterns.
+
+---
+#for i in range(9) {
+  numbering(i, "* and ")
+  numbering(i, "I")
+  [ for #i]
+  parbreak()
+}
+
+---
+// Error: 12-14 must be at least zero
+#numbering(-1, "1")
diff --git a/tests/typ/base/string.typ b/tests/typ/base/string.typ
index 3104a3eac..e724f5632 100644
--- a/tests/typ/base/string.typ
+++ b/tests/typ/base/string.typ
@@ -135,27 +135,6 @@
 #test(upper(memes), "ARE MEMES GREAT?")
 #test(upper("Ελλάδα"), "ΕΛΛΆΔΑ")
 
----
-// Test integrated lower, upper and symbols.
-// Ref: true
-
-#upper("Abc 8")
-#upper[def]
-
-#lower("SCREAMING MUST BE SILENCED in " + roman(1672) + " years")
-
-#for i in range(9) {
-  symbol(i)
-  [ and ]
-  roman(i)
-  [ for #i]
-  parbreak()
-}
-
 ---
 // Error: 8-9 expected string or content, found integer
 #upper(1)
-
----
-// Error: 9-11 must be at least zero
-#symbol(-1)
diff --git a/tests/typ/structure/enum.typ b/tests/typ/structure/enum.typ
index 40aad625e..d4c30385f 100644
--- a/tests/typ/structure/enum.typ
+++ b/tests/typ/structure/enum.typ
@@ -12,7 +12,7 @@
 ---
 // Test automatic numbering in summed content.
 #for i in range(5) {
-   [+ #roman(1 + i)]
+   [+ #numbering(1 + i, "I")]
 }
 
 ---
@@ -42,7 +42,7 @@
    start: 4,
    spacing: 0.65em - 3pt,
    tight: false,
-   label: n => text(fill: (red, green, blue)(mod(n, 3)), [#upper(letter(n))]),
+   label: n => text(fill: (red, green, blue)(mod(n, 3)), numbering(n, "A")),
    [Red], [Green], [Blue],
 )