diff --git a/cmd/tools/vdoc.v b/cmd/tools/vdoc.v
index 4cf5d7e3c5..2e80552cb8 100644
--- a/cmd/tools/vdoc.v
+++ b/cmd/tools/vdoc.v
@@ -154,9 +154,7 @@ fn (mut cfg DocConfig) serve_html() {
 	}
 	def_name := docs.keys()[0]
 	server_url := 'http://localhost:' + cfg.server_port.str()
-	server := net.listen_tcp(cfg.server_port) or {
-		panic(err)
-	}
+	server := net.listen_tcp(cfg.server_port) or { panic(err) }
 	println('Serving docs on: $server_url')
 	if cfg.open_docs {
 		open_url(server_url)
@@ -178,9 +176,7 @@ fn (mut cfg DocConfig) serve_html() {
 			panic(err)
 		}
 		handle_http_connection(mut conn, server_context)
-		conn.close() or {
-			eprintln('error closing the connection: $err')
-		}
+		conn.close() or { eprintln('error closing the connection: $err') }
 	}
 }
 
@@ -191,9 +187,7 @@ struct VdocHttpServerContext {
 }
 
 fn handle_http_connection(mut con net.TcpConn, ctx &VdocHttpServerContext) {
-	mut reader := io.new_buffered_reader({
-		reader: io.make_reader(con)
-	})
+	mut reader := io.new_buffered_reader(reader: io.make_reader(con))
 	first_line := reader.read_line() or {
 		send_http_response(mut con, 501, ctx.content_type, 'bad request')
 		return
@@ -230,15 +224,11 @@ fn send_http_response(mut con net.TcpConn, http_code int, content_type string, h
 	http_response.write('\r\n')
 	http_response.write(html)
 	sresponse := http_response.str()
-	con.write_str(sresponse) or {
-		eprintln('error sending http response: $err')
-	}
+	con.write_str(sresponse) or { eprintln('error sending http response: $err') }
 }
 
 fn get_src_link(repo_url string, file_name string, line_nr int) string {
-	mut url := urllib.parse(repo_url) or {
-		return ''
-	}
+	mut url := urllib.parse(repo_url) or { return '' }
 	if url.path.len <= 1 || file_name.len == 0 {
 		return ''
 	}
@@ -656,13 +646,13 @@ fn (mut cfg DocConfig) render_static() {
 		return
 	}
 	cfg.assets = {
-		'doc_css': cfg.get_resource(css_js_assets[0], true)
+		'doc_css':       cfg.get_resource(css_js_assets[0], true)
 		'normalize_css': cfg.get_resource(css_js_assets[1], true)
-		'doc_js': cfg.get_resource(css_js_assets[2], !cfg.serve_http)
-		'light_icon': cfg.get_resource('light.svg', true)
-		'dark_icon': cfg.get_resource('dark.svg', true)
-		'menu_icon': cfg.get_resource('menu.svg', true)
-		'arrow_icon': cfg.get_resource('arrow.svg', true)
+		'doc_js':        cfg.get_resource(css_js_assets[2], !cfg.serve_http)
+		'light_icon':    cfg.get_resource('light.svg', true)
+		'dark_icon':     cfg.get_resource('dark.svg', true)
+		'menu_icon':     cfg.get_resource('menu.svg', true)
+		'arrow_icon':    cfg.get_resource('arrow.svg', true)
 	}
 }
 
@@ -679,9 +669,7 @@ fn (cfg DocConfig) get_readme(path string) string {
 	}
 	readme_path := os.join_path(path, '${fname}.md')
 	cfg.vprintln('Reading README file from $readme_path')
-	readme_contents := os.read_file(readme_path) or {
-		''
-	}
+	readme_contents := os.read_file(readme_path) or { '' }
 	return readme_contents
 }
 
@@ -809,16 +797,12 @@ fn (mut cfg DocConfig) generate_docs_from_file() {
 			cfg.output_path = os.real_path('.')
 		}
 		if !os.exists(cfg.output_path) {
-			os.mkdir(cfg.output_path) or {
-				panic(err)
-			}
+			os.mkdir(cfg.output_path) or { panic(err) }
 		}
 		if cfg.is_multi {
 			cfg.output_path = os.join_path(cfg.output_path, '_docs')
 			if !os.exists(cfg.output_path) {
-				os.mkdir(cfg.output_path) or {
-					panic(err)
-				}
+				os.mkdir(cfg.output_path) or { panic(err) }
 			} else {
 				for fname in css_js_assets {
 					os.rm(os.join_path(cfg.output_path, fname))
@@ -865,9 +849,7 @@ fn get_ignore_paths(path string) ?[]string {
 		}
 		res = final.map(os.join_path(path, it.trim_right('/')))
 	} else {
-		mut dirs := os.ls(path) or {
-			return []string{}
-		}
+		mut dirs := os.ls(path) or { return []string{} }
 		res = dirs.map(os.join_path(path, it)).filter(os.is_dir(it))
 	}
 	return res.map(it.replace('/', os.path_separator))
@@ -887,12 +869,8 @@ fn is_included(path string, ignore_paths []string) bool {
 }
 
 fn get_modules_list(path string, ignore_paths2 []string) []string {
-	files := os.ls(path) or {
-		return []string{}
-	}
-	mut ignore_paths := get_ignore_paths(path) or {
-		[]string{}
-	}
+	files := os.ls(path) or { return []string{} }
+	mut ignore_paths := get_ignore_paths(path) or { []string{} }
 	ignore_paths << ignore_paths2
 	mut dirs := []string{}
 	for file in files {
@@ -912,9 +890,7 @@ fn get_modules_list(path string, ignore_paths2 []string) []string {
 
 fn (cfg DocConfig) get_resource(name string, minify bool) string {
 	path := os.join_path(res_path, name)
-	mut res := os.read_file(path) or {
-		panic('vdoc: could not read $path')
-	}
+	mut res := os.read_file(path) or { panic('vdoc: could not read $path') }
 	if minify {
 		if name.ends_with('.js') {
 			res = js_compress(res)
diff --git a/cmd/tools/vtest-cleancode.v b/cmd/tools/vtest-cleancode.v
index 661b00088c..94a8d3a8e4 100644
--- a/cmd/tools/vtest-cleancode.v
+++ b/cmd/tools/vtest-cleancode.v
@@ -18,6 +18,7 @@ const (
 		'nonexistant',
 	]
 	vfmt_verify_list                = [
+		'cmd/tools/vdoc.v'
 		'cmd/v/v.v',
 		'vlib/builtin/array.v',
 		'vlib/os/file.v',
diff --git a/vlib/v/doc/doc.v b/vlib/v/doc/doc.v
index d410025388..d8d993925b 100644
--- a/vlib/v/doc/doc.v
+++ b/vlib/v/doc/doc.v
@@ -11,7 +11,8 @@ import v.scanner
 import v.table
 import v.util
 
-// intentionally in order as a guide when arranging the docnodes
+// SymbolKind categorizes the symbols it documents.
+// The names are intentionally not in order as a guide when sorting the nodes.
 pub enum SymbolKind {
 	none_
 	const_group
@@ -75,10 +76,12 @@ pub mut:
 	parent_name string
 	return_type string
 	children    []DocNode
-	attrs       map[string]string
+	attrs       map[string]string [json: attributes]
 	from_scope  bool
+	is_pub      bool              [json: public]
 }
 
+// new_vdoc_preferences creates a new instance of pref.Preferences tailored for v.doc.
 pub fn new_vdoc_preferences() &pref.Preferences {
 	// vdoc should be able to parse as much user code as possible
 	// so its preferences should be permissive:
@@ -87,6 +90,7 @@ pub fn new_vdoc_preferences() &pref.Preferences {
 	}
 }
 
+// new creates a new instance of a `Doc` struct.
 pub fn new(input_path string) Doc {
 	mut d := Doc{
 		base_path: os.real_path(input_path)
@@ -105,6 +109,9 @@ pub fn new(input_path string) Doc {
 	return d
 }
 
+// stmt reads the data of an `ast.Stmt` node and returns a `DocNode`.
+// An option error is thrown if the symbol is not exposed to the public
+// (when `pub_only` is enabled) or the content's of the AST node is empty.
 pub fn (mut d Doc) stmt(stmt ast.Stmt, filename string) ?DocNode {
 	mut node := DocNode{
 		name: d.stmt_name(stmt)
@@ -112,9 +119,10 @@ pub fn (mut d Doc) stmt(stmt ast.Stmt, filename string) ?DocNode {
 		comment: ''
 		pos: d.convert_pos(filename, stmt.position())
 		file_path: os.join_path(d.base_path, filename)
+		is_pub: d.stmt_pub(stmt)
 	}
-	if (!node.content.starts_with('pub') && d.pub_only) || stmt is ast.GlobalDecl {
-		return error('symbol not public')
+	if (!node.is_pub && d.pub_only) || stmt is ast.GlobalDecl {
+		return error('symbol $node.name not public')
 	}
 	if node.name.starts_with(d.orig_mod_name + '.') {
 		node.name = node.name.all_after(d.orig_mod_name + '.')
@@ -205,6 +213,7 @@ pub fn (mut d Doc) stmt(stmt ast.Stmt, filename string) ?DocNode {
 	return node
 }
 
+// file_ast reads the contents of `ast.File` and returns a map of `DocNode`s.
 pub fn (mut d Doc) file_ast(file_ast ast.File) map[string]DocNode {
 	mut contents := map[string]DocNode{}
 	stmts := file_ast.stmts
@@ -220,7 +229,6 @@ pub fn (mut d Doc) file_ast(file_ast ast.File) map[string]DocNode {
 	mut prev_comments := []ast.Comment{}
 	mut imports_section := true
 	for sidx, stmt in stmts {
-		// eprintln('stmt typeof: ' + typeof(stmt))
 		if stmt is ast.ExprStmt {
 			if stmt.expr is ast.Comment {
 				prev_comments << stmt.expr
@@ -302,6 +310,8 @@ pub fn (mut d Doc) file_ast(file_ast ast.File) map[string]DocNode {
 	return contents
 }
 
+// file_ast_with_pos has the same function as the `file_ast` but
+// instead returns a list of variables in a given offset-based position.
 pub fn (mut d Doc) file_ast_with_pos(file_ast ast.File, pos int) map[string]DocNode {
 	lscope := file_ast.scope.innermost(pos)
 	mut contents := map[string]DocNode{}
@@ -323,6 +333,8 @@ pub fn (mut d Doc) file_ast_with_pos(file_ast ast.File, pos int) map[string]DocN
 	return contents
 }
 
+// generate is a `Doc` method that will start documentation
+// process based on a file path provided.
 pub fn (mut d Doc) generate() ? {
 	// get all files
 	d.base_path = if os.is_dir(d.base_path) { d.base_path } else { os.real_path(os.dir(d.base_path)) }
@@ -353,6 +365,8 @@ pub fn (mut d Doc) generate() ? {
 	return d.file_asts(file_asts)
 }
 
+// file_asts has the same function as the `file_ast` function but
+// accepts an array of `ast.File` and throws an error if necessary.
 pub fn (mut d Doc) file_asts(file_asts []ast.File) ? {
 	mut fname_has_set := false
 	d.orig_mod_name = file_asts[0].mod.name
@@ -380,17 +394,27 @@ pub fn (mut d Doc) file_asts(file_asts []ast.File) ? {
 		}
 		contents := d.file_ast(file_ast)
 		for name, node in contents {
-			if name in d.contents && (d.contents[name].kind != .none_ || node.kind == .none_) {
-				d.contents[name].children << node.children
-				d.contents[name].children.sort_by_name()
+			if name !in d.contents {
+				d.contents[name] = node
 				continue
 			}
-			d.contents[name] = node
+			if d.contents[name].kind == .typedef && node.kind !in [.typedef, .none_] {
+				old_children := d.contents[name].children.clone()
+				d.contents[name] = node
+				d.contents[name].children = old_children
+			}
+			if d.contents[name].kind != .none_ || node.kind == .none_ {
+				d.contents[name].children << node.children
+				d.contents[name].children.sort_by_name()
+				d.contents[name].children.sort_by_kind()
+			}
 		}
 	}
 	d.time_generated = time.now()
 }
 
+// generate documents a certain file directory and returns an
+// instance of `Doc` if it is successful. Otherwise, it will  throw an error.
 pub fn generate(input_path string, pub_only bool, with_comments bool) ?Doc {
 	mut doc := new(input_path)
 	doc.pub_only = pub_only
@@ -399,6 +423,8 @@ pub fn generate(input_path string, pub_only bool, with_comments bool) ?Doc {
 	return doc
 }
 
+// generate_with_pos has the same function as the `generate` function but
+// accepts an offset-based position and enables the comments by default.
 pub fn generate_with_pos(input_path string, filename string, pos int) ?Doc {
 	mut doc := new(input_path)
 	doc.pub_only = false
diff --git a/vlib/v/doc/module.v b/vlib/v/doc/module.v
index 8b26750e29..860d66592c 100644
--- a/vlib/v/doc/module.v
+++ b/vlib/v/doc/module.v
@@ -6,7 +6,7 @@ import v.parser
 import v.ast
 import v.pref
 
-// get_parent_mod - return the parent mod name, in dot format.
+// get_parent_mod returns the parent mod name, in dot format.
 // It works by climbing up the folder hierarchy, until a folder,
 // that either contains main .v files, or a v.mod file is reached.
 // For example, given something like /languages/v/vlib/x/websocket/tests/autobahn
@@ -55,6 +55,8 @@ fn get_parent_mod(input_dir string) ?string {
 	return file_ast.mod.name
 }
 
+// lookup_module_with_path looks up the path of a given module name.
+// Throws an error if the module was not found.
 pub fn lookup_module_with_path(mod string, base_path string) ?string {
 	vexe := pref.vexe_path()
 	vroot := os.dir(vexe)
@@ -76,10 +78,13 @@ pub fn lookup_module_with_path(mod string, base_path string) ?string {
 	return error('module "$mod" not found.')
 }
 
+// lookup_module returns the result of the `lookup_module_with_path`
+// but with the current directory as the provided base lookup path.
 pub fn lookup_module(mod string) ?string {
 	return lookup_module_with_path(mod, os.dir('.'))
 }
 
+// generate_from_mod generates a documentation from a specific module.
 pub fn generate_from_mod(module_name string, pub_only bool, with_comments bool) ?Doc {
 	mod_path := lookup_module(module_name) ?
 	return generate(mod_path, pub_only, with_comments)
diff --git a/vlib/v/doc/node.v b/vlib/v/doc/node.v
index 489afc45a3..09f73d5e69 100644
--- a/vlib/v/doc/node.v
+++ b/vlib/v/doc/node.v
@@ -10,10 +10,12 @@ pub fn (nodes []DocNode) find(symname string) ?DocNode {
 	return error('symbol not found')
 }
 
+// sort_by_name sorts the array based on the symbol names.
 pub fn (mut nodes []DocNode) sort_by_name() {
 	nodes.sort_with_compare(compare_nodes_by_name)
 }
 
+// sort_by_kind sorts the array based on the symbol kind.
 pub fn (mut nodes []DocNode) sort_by_kind() {
 	nodes.sort_with_compare(compare_nodes_by_kind)
 }
@@ -36,6 +38,7 @@ fn compare_nodes_by_name(a &DocNode, b &DocNode) int {
 	return compare_strings(al, bl)
 }
 
+// arr() converts the map into an array of `DocNode`.
 pub fn (cnts map[string]DocNode) arr() []DocNode {
 	mut contents := cnts.keys().map(cnts[it])
 	contents.sort_by_name()
diff --git a/vlib/v/doc/utils.v b/vlib/v/doc/utils.v
index 0b5ae53963..38d322157a 100644
--- a/vlib/v/doc/utils.v
+++ b/vlib/v/doc/utils.v
@@ -7,6 +7,7 @@ import v.token
 import v.table
 import os
 
+// merge_comments merges all the comment contents into a single text.
 pub fn merge_comments(comments []ast.Comment) string {
 	mut res := []string{}
 	for comment in comments {
@@ -15,6 +16,8 @@ pub fn merge_comments(comments []ast.Comment) string {
 	return res.join('\n')
 }
 
+// get_comment_block_right_before merges all the comments starting from
+// the last up to the first item of the array.
 pub fn get_comment_block_right_before(comments []ast.Comment) string {
 	if comments.len == 0 {
 		return ''
@@ -60,6 +63,7 @@ pub fn get_comment_block_right_before(comments []ast.Comment) string {
 	return comment
 }
 
+// convert_pos converts the `token.Position` data into a `DocPos`.
 fn (mut d Doc) convert_pos(filename string, pos token.Position) DocPos {
 	if filename !in d.sources {
 		d.sources[filename] = util.read_file(os.join_path(d.base_path, filename)) or { '' }
@@ -74,6 +78,7 @@ fn (mut d Doc) convert_pos(filename string, pos token.Position) DocPos {
 	}
 }
 
+// stmt_signature returns the signature of a given `ast.Stmt` node.
 pub fn (mut d Doc) stmt_signature(stmt ast.Stmt) string {
 	match stmt {
 		ast.Module {
@@ -90,6 +95,7 @@ pub fn (mut d Doc) stmt_signature(stmt ast.Stmt) string {
 	}
 }
 
+// stmt_name returns the name of a given `ast.Stmt` node.
 pub fn (d Doc) stmt_name(stmt ast.Stmt) string {
 	match stmt {
 		ast.FnDecl, ast.StructDecl, ast.EnumDecl, ast.InterfaceDecl { return stmt.name }
@@ -101,10 +107,26 @@ pub fn (d Doc) stmt_name(stmt ast.Stmt) string {
 	}
 }
 
+// stmt_pub returns a boolean if a given `ast.Stmt` node
+// is exposed to the public.
+pub fn (d Doc) stmt_pub(stmt ast.Stmt) bool {
+	match stmt {
+		ast.FnDecl, ast.StructDecl, ast.EnumDecl, ast.InterfaceDecl, ast.ConstDecl { return stmt.is_pub }
+		ast.TypeDecl { match stmt {
+				ast.FnTypeDecl, ast.AliasTypeDecl, ast.SumTypeDecl { return stmt.is_pub }
+			} }
+		else { return false }
+	}
+}
+
+// type_to_str is a wrapper function around `fmt.table.type_to_str`.
 pub fn (d Doc) type_to_str(typ table.Type) string {
 	return d.fmt.table.type_to_str(typ).all_after('&')
 }
 
+// expr_typ_to_string has the same function as `Doc.typ_to_str`
+// but for `ast.Expr` nodes. The checker will check first the
+// node and it executes the `type_to_str` method.
 pub fn (mut d Doc) expr_typ_to_string(ex ast.Expr) string {
 	expr_typ := d.checker.expr(ex)
 	return d.type_to_str(expr_typ)