diff --git a/cpp/QrCode.hpp b/cpp/QrCode.hpp
index d4115cf..3166edd 100644
--- a/cpp/QrCode.hpp
+++ b/cpp/QrCode.hpp
@@ -55,7 +55,7 @@ class QrCode final {
 	
 	
 	
-	/*---- Public static factory functions ----*/
+	/*---- Static factory functions (high level) ----*/
 	
 	/* 
 	 * Returns a QR Code symbol representing the given Unicode text string at the given error correction level.
@@ -76,6 +76,8 @@ class QrCode final {
 	public: static QrCode encodeBinary(const std::vector<std::uint8_t> &data, Ecc ecl);
 	
 	
+	/*---- Static factory functions (mid level) ----*/
+	
 	/* 
 	 * Returns a QR Code symbol representing the given segments with the given encoding parameters.
 	 * The smallest possible QR Code version within the given range is automatically chosen for the output.
@@ -113,7 +115,7 @@ class QrCode final {
 	
 	
 	
-	/*---- Constructor ----*/
+	/*---- Constructor (low level) ----*/
 	
 	/* 
 	 * Creates a new QR Code symbol with the given version number, error correction level, binary data array,
diff --git a/cpp/QrSegment.hpp b/cpp/QrSegment.hpp
index 3cd0ec3..2bb0c3b 100644
--- a/cpp/QrSegment.hpp
+++ b/cpp/QrSegment.hpp
@@ -85,7 +85,7 @@ class QrSegment final {
 	
 	
 	
-	/*---- Public static factory functions ----*/
+	/*---- Static factory functions (mid level) ----*/
 	
 	/* 
 	 * Returns a segment representing the given binary data encoded in byte mode.
@@ -148,7 +148,7 @@ class QrSegment final {
 	private: std::vector<bool> data;
 	
 	
-	/*---- Constructors ----*/
+	/*---- Constructors (low level) ----*/
 	
 	/* 
 	 * Creates a new QR Code segment with the given parameters and data.
diff --git a/java/io/nayuki/qrcodegen/QrCode.java b/java/io/nayuki/qrcodegen/QrCode.java
index c694f13..d8f601e 100644
--- a/java/io/nayuki/qrcodegen/QrCode.java
+++ b/java/io/nayuki/qrcodegen/QrCode.java
@@ -37,7 +37,7 @@ import java.util.Objects;
  */
 public final class QrCode {
 	
-	/*---- Public static factory functions ----*/
+	/*---- Static factory functions (high level) ----*/
 	
 	/**
 	 * Returns a QR Code symbol representing the specified Unicode text string at the specified error correction level.
@@ -80,6 +80,8 @@ public final class QrCode {
 	}
 	
 	
+	/*---- Static factory functions (mid level) ----*/
+	
 	/**
 	 * Returns a QR Code symbol representing the specified segments at the specified error correction
 	 * level. The smallest possible QR Code version is automatically chosen for the output. The ECC level
@@ -192,7 +194,7 @@ public final class QrCode {
 	
 	
 	
-	/*---- Constructor ----*/
+	/*---- Constructor (low level) ----*/
 	
 	/**
 	 * Constructs a QR Code symbol with the specified version number, error correction level, binary data array, and mask number.
diff --git a/java/io/nayuki/qrcodegen/QrSegment.java b/java/io/nayuki/qrcodegen/QrSegment.java
index 264c735..f997be5 100644
--- a/java/io/nayuki/qrcodegen/QrSegment.java
+++ b/java/io/nayuki/qrcodegen/QrSegment.java
@@ -39,7 +39,7 @@ import java.util.regex.Pattern;
  */
 public final class QrSegment {
 	
-	/*---- Static factory functions ----*/
+	/*---- Static factory functions (mid level) ----*/
 	
 	/**
 	 * Returns a segment representing the specified binary data encoded in byte mode.
@@ -166,7 +166,7 @@ public final class QrSegment {
 	final BitBuffer data;
 	
 	
-	/*---- Constructor ----*/
+	/*---- Constructor (low level) ----*/
 	
 	/**
 	 * Constructs a QR Code segment with the specified parameters and data.
diff --git a/javascript/qrcodegen.js b/javascript/qrcodegen.js
index a78bc1a..bb556e3 100644
--- a/javascript/qrcodegen.js
+++ b/javascript/qrcodegen.js
@@ -70,7 +70,7 @@ var qrcodegen = new function() {
 	 */
 	this.QrCode = function(datacodewords, mask, version, errCorLvl) {
 		
-		/*---- Constructor ----*/
+		/*---- Constructor (low level) ----*/
 		
 		// Check arguments and handle simple scalar fields
 		if (mask < -1 || mask > 7)
@@ -510,7 +510,7 @@ var qrcodegen = new function() {
 	};
 	
 	
-	/*---- Public static factory functions for QrCode ----*/
+	/*---- Static factory functions (high level) for QrCode ----*/
 	
 	/* 
 	 * Returns a QR Code symbol representing the given Unicode text string at the given error correction level.
@@ -537,6 +537,8 @@ var qrcodegen = new function() {
 	};
 	
 	
+	/*---- Static factory functions (mid level) for QrCode ----*/
+	
 	/* 
 	 * Returns a QR Code symbol representing the given segments with the given encoding parameters.
 	 * The smallest possible QR Code version within the given range is automatically chosen for the output.
@@ -698,6 +700,7 @@ var qrcodegen = new function() {
 	 * Any segment longer than this is meaningless for the purpose of generating QR Codes.
 	 */
 	this.QrSegment = function(mode, numChars, bitData) {
+		/*---- Constructor (low level) ----*/
 		if (numChars < 0 || !(mode instanceof Mode))
 			throw "Invalid argument";
 		bitData = bitData.slice();  // Make defensive copy
@@ -715,7 +718,7 @@ var qrcodegen = new function() {
 	};
 	
 	
-	/*---- Public static factory functions for QrSegment ----*/
+	/*---- Static factory functions (mid level) for QrSegment ----*/
 	
 	/* 
 	 * Returns a segment representing the given binary data encoded in byte mode.
diff --git a/python/qrcodegen.py b/python/qrcodegen.py
index f0462f7..223e8d0 100644
--- a/python/qrcodegen.py
+++ b/python/qrcodegen.py
@@ -66,7 +66,7 @@ class QrCode(object):
 	This class covers the QR Code Model 2 specification, supporting all versions (sizes)
 	from 1 to 40, all 4 error correction levels, and 4 character encoding modes."""
 	
-	# ---- Public static factory functions ----
+	# ---- Static factory functions (high level) ----
 	
 	@staticmethod
 	def encode_text(text, ecl):
@@ -90,6 +90,8 @@ class QrCode(object):
 		return QrCode.encode_segments([QrSegment.make_bytes(data)], ecl)
 	
 	
+	# ---- Static factory functions (mid level) ----
+	
 	@staticmethod
 	def encode_segments(segs, ecl, minversion=1, maxversion=40, mask=-1, boostecl=True):
 		"""Returns a QR Code symbol representing the given segments with the given encoding parameters.
@@ -142,7 +144,7 @@ class QrCode(object):
 		return QrCode(bb.get_bytes(), mask, version, ecl)
 	
 	
-	# ---- Constructor ----
+	# ---- Constructor (low level) ----
 	
 	def __init__(self, datacodewords, mask, version, errcorlvl):
 		"""Creates a new QR Code symbol with the given version number, error correction level, binary data array,
@@ -588,7 +590,7 @@ class QrSegment(object):
 	Even in the most favorable conditions, a QR Code can only hold 7089 characters of data.
 	Any segment longer than this is meaningless for the purpose of generating QR Codes."""
 	
-	# ---- Public static factory functions ----
+	# ---- Static factory functions (mid level) ----
 	
 	@staticmethod
 	def make_bytes(data):
@@ -673,7 +675,7 @@ class QrSegment(object):
 		return QrSegment(QrSegment.Mode.ECI, 0, bb)
 	
 	
-	# ---- Constructor ----
+	# ---- Constructor (low level) ----
 	
 	def __init__(self, mode, numch, bitdata):
 		"""Creates a new QR Code segment with the given parameters and data."""
diff --git a/rust/src/lib.rs b/rust/src/lib.rs
index a43958a..93de6c5 100644
--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
@@ -57,7 +57,7 @@ pub struct QrCode {
 
 impl QrCode {
 	
-	/*---- Public static factory functions ----*/
+	/*---- Static factory functions (high level) ----*/
 	
 	// Returns a QR Code symbol representing the given Unicode text string at the given error correction level.
 	// As a conservative upper bound, this function is guaranteed to succeed for strings that have 738 or fewer Unicode
@@ -83,6 +83,8 @@ impl QrCode {
 	}
 	
 	
+	/*---- Static factory functions (mid level) ----*/
+	
 	// Returns a QR Code symbol representing the given segments at the given error correction level.
 	// The smallest possible QR Code version is automatically chosen for the output. The ECC level
 	// of the result may be higher than the ecl argument if it can be done without increasing the version.
@@ -167,7 +169,7 @@ impl QrCode {
 	}
 	
 	
-	/*---- Constructor ----*/
+	/*---- Constructor (low level) ----*/
 	
 	// Creates a new QR Code symbol with the given version number, error correction level,
 	// binary data array, and mask number. This is a cumbersome low-level constructor that
@@ -841,7 +843,7 @@ pub struct QrSegment {
 
 impl QrSegment {
 	
-	/*---- Static factory functions ----*/
+	/*---- Static factory functions (mid level) ----*/
 	
 	// Returns a segment representing the given binary data encoded in byte mode.
 	pub fn make_bytes(data: &[u8]) -> Self {
@@ -938,6 +940,8 @@ impl QrSegment {
 	}
 	
 	
+	/*---- Constructor (low level) ----*/
+	
 	// Creates a new QR Code segment with the given parameters and data.
 	pub fn new(mode: QrSegmentMode, numchars: usize, data: Vec<bool>) -> Self {
 		Self {
diff --git a/typescript/qrcodegen.ts b/typescript/qrcodegen.ts
index 3c11da2..cb5d71d 100644
--- a/typescript/qrcodegen.ts
+++ b/typescript/qrcodegen.ts
@@ -44,7 +44,7 @@ namespace qrcodegen {
 	 */
 	export class QrCode {
 		
-		/*-- Public static factory functions --*/
+		/*-- Static factory functions (high level) --*/
 		
 		// Returns a QR Code symbol representing the given Unicode text string at the given error correction level.
 		// As a conservative upper bound, this function is guaranteed to succeed for strings that have 738 or fewer
@@ -67,6 +67,8 @@ namespace qrcodegen {
 		}
 		
 		
+		/*-- Static factory functions (mid level) --*/
+		
 		// Returns a QR Code symbol representing the given segments with the given encoding parameters.
 		// The smallest possible QR Code version within the given range is automatically chosen for the output.
 		// This function allows the user to create a custom sequence of segments that switches
@@ -142,7 +144,7 @@ namespace qrcodegen {
 		private readonly isFunction: Array<Array<boolean>> = [];
 		
 		
-		/*-- Constructor and fields --*/
+		/*-- Constructor (low level) and fields --*/
 		
 		public constructor(
 				datacodewords: Array<byte>,
@@ -654,7 +656,7 @@ namespace qrcodegen {
 	 */
 	export class QrSegment {
 		
-		/*-- Static factory functions --*/
+		/*-- Static factory functions (mid level) --*/
 		
 		// Returns a segment representing the given binary data encoded in byte mode.
 		public static makeBytes(data: Array<byte>): QrSegment {
@@ -733,7 +735,7 @@ namespace qrcodegen {
 		}
 		
 		
-		/*-- Constructor and fields --*/
+		/*-- Constructor (low level) and fields --*/
 		
 		// Creates a new QR Code segment with the given parameters and data.
 		public constructor(