diff --git a/src/main/js/Commands.ts b/src/main/js/Commands.ts
index b5a181c..81cda34 100644
--- a/src/main/js/Commands.ts
+++ b/src/main/js/Commands.ts
@@ -221,7 +221,6 @@ export class Commands {
      * Parses and executes the given input string and returns the output generated by that command.
      *
      * @param input the input string to parse and execute
-     * @return the output generated by that command
      */
     execute(input: InputArgs): string {
         if (input.command === "factory-reset") {
@@ -249,7 +248,6 @@ export class Commands {
      *
      * @param commandName the name of the command that was used incorrectly
      * @param errorMessage the message describing how the command was used incorrectly; preferably ended with a `.`
-     * @return an output action corresponding to an error message about invalid usage of a command
      */
     private createUsageErrorOutput(commandName: string, errorMessage: string | undefined): string {
         const command = this.commands[commandName];
@@ -570,7 +568,6 @@ export class Commands {
      * Maps sources to inputs for the `move` and `copy` commands.
      *
      * @param input the input to extract mappings from
-     * @return the mappings from source to destination
      */
     private moveCopyMappings(input: InputArgs): [Path, Path][] {
         const sources = input.args.slice(0, -1).map(arg => Path.interpret(this.environment.get("cwd"), arg));
@@ -682,8 +679,6 @@ class InputValidator {
      * valid.
      *
      * @param input the input to validate
-     * @return `[true]` if the input is valid, or `[false, string]` where the string is a reason if the input is not
-     * valid
      */
     validate(input: InputArgs): [true] | [false, string] {
         if (this.minArgs === this.maxArgs && input.args.length !== this.minArgs)
@@ -700,7 +695,6 @@ class InputValidator {
      * Returns `"1 argument"` if the given amount is `1` and returns `"$n arguments"` otherwise.
      *
      * @param amount the amount to check
-     * @return `"1 argument"` if the given amount is `1` and returns `"$n arguments"` otherwise.
      */
     private args(amount: number): string {
         return amount === 1 ? `1 argument` : `${amount} arguments`;
diff --git a/src/main/js/Environment.ts b/src/main/js/Environment.ts
index a83de82..17e3b27 100644
--- a/src/main/js/Environment.ts
+++ b/src/main/js/Environment.ts
@@ -32,8 +32,6 @@ export class Environment {
 
     /**
      * Returns a copy of the variables contained within this environment.
-     *
-     * @return a copy of the variables contained within this environment
      */
     get variables(): { [key: string]: string } {
         return Object.assign({}, this._variables);
@@ -79,7 +77,6 @@ export class Environment {
      * environment variable.
      *
      * @param key the key of the environment variable to return
-     * @return the value of the environment variable with the given key
      * @throws if there is no such environment variable
      */
     get(key: string): string {
@@ -94,9 +91,7 @@ export class Environment {
      * environment variable.
      *
      * @param key the key of the environment variable to return
-     * @param def the
-     * @return the value of the environment variable with the given key, or the given default value if there is no such
-     * environment variable
+     * @param def the default value to return in case there is no environment variable with the given key
      */
     getOrDefault(key: string, def: string): string {
         const value = this._variables[key];
@@ -109,7 +104,6 @@ export class Environment {
      * Returns `true` if and only if there is an environment variable with the given key.
      *
      * @param key the key of the environment variable to check
-     * @return `true` if and only if there is an environment variable with the given key
      */
     has(key: string): boolean {
         return this._variables.hasOwnProperty(key);
@@ -158,7 +152,6 @@ export class Environment {
      * Returns `true` if and only if the given key has a valid format.
      *
      * @param key the key to validate
-     * @return `true` if and only if the given key has a valid format
      */
     private static isKeyValid(key: string): boolean {
         return !!key.match(/^[0-9a-z_]+$/i);
diff --git a/src/main/js/Extensions.ts b/src/main/js/Extensions.ts
index 9a8b265..1f18206 100644
--- a/src/main/js/Extensions.ts
+++ b/src/main/js/Extensions.ts
@@ -6,8 +6,6 @@ interface String {
 
 /**
  * Returns this string with all leading and trailing whitespace removed from each line.
- *
- * @return this string with all leading and trailing whitespace removed from each line
  */
 String.prototype.trimLines = function (): string {
     return this.split("\n").map(it => it.trim()).join("\n");
@@ -18,7 +16,6 @@ String.prototype.trimLines = function (): string {
  *
  * @param regex the regex to find matches with
  * @param replacement the string to replace matches with
- * @return this string with all matches with the given regex replaced with the given replacement
  */
 String.prototype.replaceAll = function (regex: RegExp, replacement: string): string {
     let string = this.toString();
@@ -39,7 +36,6 @@ interface Array<T> {
  *
  * @param transform transforms elements of the array into a string that is used for comparing
  * @param caseSensitive `true` if and only if the comparator should be sensitive to the case of characters
- * @return a comparator that compares elements of an array based on their string representation
  */
 Array.prototype.sortAlphabetically = function (transform: (_: any) => string = (it) => it,
                                                caseSensitive: boolean = true) {
diff --git a/src/main/js/FileSystem.ts b/src/main/js/FileSystem.ts
index 614cd29..5e50276 100644
--- a/src/main/js/FileSystem.ts
+++ b/src/main/js/FileSystem.ts
@@ -94,7 +94,6 @@ export class FileSystem {
      * Returns the node at the given path, or `undefined` if the node does not exist.
      *
      * @param target the path of the node to return
-     * @return the node at the given path, or `undefined` if the node does not exist
      */
     get(target: Path): Node | undefined {
         if (target.toString() === "/")
@@ -111,7 +110,6 @@ export class FileSystem {
      * Returns `true` if and only if there exists a node at the given path.
      *
      * @param target the path to check for node presence
-     * @return `true` if and only if there exists a node at the given path
      */
     has(target: Path): boolean {
         if (target.toString() === "/")
@@ -224,7 +222,6 @@ export class Path {
      *
      * @param cwd the current working directory, used as a baseline
      * @param paths the paths that may or may not be absolute
-     * @return an absolute path
      */
     static interpret(cwd: string, ...paths: string[]): Path {
         if (paths.length === 0)
@@ -238,8 +235,6 @@ export class Path {
 
     /**
      * Returns the path describing the parent directory.
-     *
-     * @return the path describing the parent directory
      */
     get parent(): Path {
         return new Path(this._parent);
@@ -247,8 +242,6 @@ export class Path {
 
     /**
      * Returns all ancestors of this path, starting at the parent and ending at the root.
-     *
-     * @return all ancestors of this path, starting at the parent and ending at the root
      */
     get ancestors(): Path[] {
         const parents: Path[] = [];
@@ -269,7 +262,6 @@ export class Path {
      * Returns a path describing the path to the desired child node of `this` path.
      *
      * @param child the path to the desired node relative to `this` path
-     * @return a path describing the path to the desired child node of `this` path
      */
     getChild(child: string): Path {
         return new Path(this.path + "/" + child);
@@ -279,7 +271,6 @@ export class Path {
      * Returns the string representation of this path.
      *
      * @param escape `true` if and only if special characters should be escaped for use inside strings
-     * @return the string representation of this path
      */
     toString(escape: boolean = false): string {
         if (!escape)
@@ -318,15 +309,12 @@ export abstract class Node {
      *
      * @param name the name of this node
      * @param path the path to this node
-     * @return a string representation of this node given the name of and path to this node
      */
     abstract nameString(name: string, path: Path): string;
 
 
     /**
      * Returns the JSON serialization of this node.
-     *
-     * @return the JSON serialization of this node
      */
     serialize(): string {
         return JSON.stringify(this);
@@ -339,7 +327,6 @@ export abstract class Node {
      * corresponding parse method for that type.
      *
      * @param json a JSON string or object describing a node
-     * @return the JSON deserialization of the given string as a node
      */
     static deserialize(json: string | any): Node {
         if (typeof json === "string") {
@@ -385,8 +372,6 @@ export class Directory extends Node {
 
     /**
      * Returns a copy of all nodes contained in this directory.
-     *
-     * @return a copy of all nodes contained in this directory
      */
     get nodes(): { [name: string]: Node } {
         return Object.assign({}, this._nodes);
@@ -394,8 +379,6 @@ export class Directory extends Node {
 
     /**
      * Returns the number of nodes in this directory.
-     *
-     * @return the number of nodes in this directory
      */
     get nodeCount(): number {
         return Object.keys(this._nodes).length;
@@ -420,8 +403,6 @@ export class Directory extends Node {
      * directory.
      *
      * @param name the name to check
-     * @return `true` if and only if this directory contains a node with the given name or the name refers to this
-     * directory
      */
     hasNode(name: string): boolean {
         if (name === "." || name === ".." || new Path(`/${name}`).toString() === "/")
@@ -472,7 +453,6 @@ export class Directory extends Node {
      *
      * @param name the name of this node
      * @param path the path to this node
-     * @return a string that contains an HTML hyperlink that runs a command to `cd` to this directory
      */
     nameString(name: string, path: Path): string {
         return `<a href="#" class="dirLink" onclick="execute('cd ${path.toString(true)}');execute('ls')">${name}</a>`;
@@ -485,7 +465,6 @@ export class Directory extends Node {
      * The nodes inside the directory of the given object are also recursively parsed by this method.
      *
      * @param obj the object that describes a directory
-     * @return the directory described by the given object
      */
     static parse(obj: any): Directory {
         if (obj["type"] !== "Directory")
@@ -542,7 +521,6 @@ export class File extends Node {
      * Parses the given object into a file.
      *
      * @param obj the object that describes a file
-     * @return the file described by the given object
      */
     static parse(obj: any): File {
         if (obj["type"] !== "File")
diff --git a/src/main/js/Shared.ts b/src/main/js/Shared.ts
index 53e82f1..e6af348 100644
--- a/src/main/js/Shared.ts
+++ b/src/main/js/Shared.ts
@@ -42,7 +42,6 @@ export function addOnLoad(fun: () => void): void {
  * Returns the extension of the given filename, or `""` if it doesn't have one.
  *
  * @param filename the filename to return the extension of
- * @return the extension of the given filename, or `""` if it doesn't have one
  */
 export function getFileExtension(filename: string): string {
     const extension = /^.+\.([^.]+)$/.exec(filename);
@@ -72,7 +71,6 @@ export function moveCaretToEndOf(node: Node): void {
  * For example, if the given string is `"3px"`, this function will return `3`.
  *
  * @param string the CSS value to extract the number of pixels from
- * @return the number of pixels in a CSS value that describes a number of pixels, or `0` if the given string is `null`
  * @throws if the given string does not end with the text `"px"`
  */
 export function parseCssPixels(string: string | null): number {
@@ -90,7 +88,6 @@ export function parseCssPixels(string: string | null): number {
  * Type-safe shorthand for `document.querySelector(query)`.
  *
  * @param query the query to run
- * @return the same as `document.querySelector(query)`
  * @throws if the element could not be found
  */
 export function q(query: string): HTMLElement {
@@ -105,7 +102,6 @@ export function q(query: string): HTMLElement {
  * Returns this string with all HTML tags stripped.
  *
  * @param string the string to strip HTML tags from
- * @return this string with all HTML tags stripped
  */
 export function stripHtmlTags(string: string): string {
     const div = document.createElement("div");
diff --git a/src/main/js/Shell.ts b/src/main/js/Shell.ts
index 99b0e89..560561c 100644
--- a/src/main/js/Shell.ts
+++ b/src/main/js/Shell.ts
@@ -56,9 +56,7 @@ export class Shell {
 
 
     /**
-     * Generates the header that is displayed when a user logs in.
-     *
-     * @return the header that is displayed when a user logs in
+     * Returns the header that is displayed when a user logs in.
      */
     generateHeader(): string {
         if (this.environment.get("user") === "")
@@ -77,9 +75,7 @@ export class Shell {
     }
 
     /**
-     * Generates the prefix based on the current state of the terminal.
-     *
-     * @return  the prefix based on the current state of the terminal
+     * Returns the prefix based on the current state of the terminal.
      */
     generatePrefix(): string {
         const userName = this.environment.get("user");
@@ -172,7 +168,6 @@ export class Shell {
      * @param path the path of the file to write or append to
      * @param data the data to write or append
      * @param append `true` if and only if the data should be appended
-     * @return an empty string if the writing or appending was successful, or a message explaining what went wrong
      */
     private writeToFile(path: Path, data: string, append: boolean): string {
         try {
@@ -208,9 +203,6 @@ export class Shell {
     /**
      * Returns the file system loaded from a cookie, or the default file system if no cookie is present or the cookie
      * is invalid.
-     *
-     * @return the file system loaded from a cookie, or the default file system if no cookie is present or the cookie
-     * is invalid
      */
     private static loadFileSystem(): FileSystem {
         let files: Directory | undefined = undefined;
@@ -235,8 +227,6 @@ export class Shell {
      *
      * @param fileSystem the file system used to validate the `cwd` environment variable
      * @param userList the list of users used to validate the `user` environment variable
-     * @return the environment loaded from a cookie, or the default environment if no cookie is present or the cookie
-     * is invalid
      */
     private static loadEnvironment(fileSystem: FileSystem, userList: UserList): Environment {
         const environmentString = Cookies.get("env") || "{}";
@@ -325,8 +315,6 @@ export class InputArgs {
 
     /**
      * Returns a copy of the options the user has given.
-     *
-     * @return a copy of the options the user has given
      */
     get options(): InputOptions {
         return Object.assign({}, this._options);
@@ -336,7 +324,6 @@ export class InputArgs {
      * Returns `true` if and only if the option with the given key has been set.
      *
      * @param key the key to check
-     * @return `true` if and only if the option with the given key has been set
      */
     hasOption(key: string): boolean {
         return this._options.hasOwnProperty(key);
@@ -346,7 +333,6 @@ export class InputArgs {
      * Returns `true` if and only if at least one of the options with the given keys has been set.
      *
      * @param keys the keys to check
-     * @return `true` if and only if at least one of the options with the given keys has been set
      */
     hasAnyOption(keys: string[]): boolean {
         for (let i = 0; i < keys.length; i++)
@@ -359,8 +345,6 @@ export class InputArgs {
 
     /**
      * Returns a copy of the arguments the user has given.
-     *
-     * @return a copy of the arguments the user has given
      */
     get args(): string[] {
         return this._args.slice();
@@ -370,7 +354,6 @@ export class InputArgs {
      * Returns `true` if and only if there is an argument at the given index.
      *
      * @param index the index to check
-     * @return `true` if and only if there is an argument at the given index
      */
     hasArg(index: number): boolean {
         return this._args[index] !== undefined;
@@ -401,7 +384,6 @@ export class InputParser {
      * Parses the given input string to a set of command-line arguments.
      *
      * @param input the string to parse
-     * @return the set of parsed command-line arguments
      */
     parse(input: string): InputArgs {
         const tokens = this.tokenize(input);
@@ -418,7 +400,6 @@ export class InputParser {
      * Tokenizes the input string.
      *
      * @param input the string to tokenize
-     * @return the array of tokens found in the input string
      */
     private tokenize(input: string): string[] {
         const tokens = [];
@@ -436,7 +417,6 @@ export class InputParser {
      * Returns the first token in the given string and the remaining string.
      *
      * @param input the string of which to return the first token
-     * @return the first token in the given string and the remaining string
      */
     private getNextToken(input: string): [string, string] {
         let token = "";
@@ -514,7 +494,6 @@ export class InputParser {
      * Returns the value of the first environment variable in the given string and the length of the variable name.
      *
      * @param input the string to find the first environment variable in
-     * @return the value of the first environment variable in the given string and the length of the variable name
      */
     private getNextVariable(input: string): [string, number] {
         let variable = "";
@@ -534,8 +513,6 @@ export class InputParser {
      * target if no token describes a redirect target.
      *
      * @param tokens an array of tokens of which some tokens may describe a redirect target
-     * @return the redirect target described by the last token that describes a redirect target, or the default redirect
-     * target if no token describes a redirect target
      */
     private getRedirectTarget(tokens: string[]): ["default"] | ["write" | "append", string] {
         let redirectTarget: ["default"] | ["write" | "append", string] = ["default"];
@@ -554,7 +531,6 @@ export class InputParser {
      * Parses options and arguments.
      *
      * @param tokens the tokens that form the options and arguments
-     * @return the options and arguments as `[options, arguments]`
      */
     private parseOpts(tokens: string[]): [{ [key: string]: string | null }, string[]] {
         const options: { [key: string]: string | null } = {};
diff --git a/src/main/js/Terminal.ts b/src/main/js/Terminal.ts
index 18b6fcb..b1eb2ca 100644
--- a/src/main/js/Terminal.ts
+++ b/src/main/js/Terminal.ts
@@ -84,8 +84,6 @@ export class Terminal {
 
     /**
      * Returns the input the user has entered in the HTML element.
-     *
-     * @return the input the user has entered in the HTML element
      */
     private get inputText(): string {
         return this.input.innerHTML.replaceAll(/<br>/, "");
@@ -102,8 +100,6 @@ export class Terminal {
 
     /**
      * Returns the terminal output that is being displayed.
-     *
-     * @return the terminal output that is being displayed
      */
     private get outputText(): string {
         return this.output.innerHTML;
@@ -120,8 +116,6 @@ export class Terminal {
 
     /**
      * Returns the current prefix text.
-     *
-     * @return the current prefix text
      */
     private get prefixText(): string {
         return this.prefixDiv.innerHTML;
@@ -138,8 +132,6 @@ export class Terminal {
 
     /**
      * Returns how many lines the user has scrolled up in the terminal.
-     *
-     * @return how many lines the user has scrolled up in the terminal
      */
     private get scroll(): number {
         return -Math.round(parseCssPixels(this.terminal.style.marginBottom) / this.lineHeight);
@@ -170,8 +162,6 @@ export class Terminal {
 
     /**
      * Returns `true` if and only if the input field does not display the user's input.
-     *
-     * @return `true` if and only if the input field does not display the user's input
      */
     private get isInputHidden(): boolean {
         return this.input.classList.contains("terminalCurrentFocusInputHidden");
@@ -374,7 +364,6 @@ export class InputHistory {
      * Returns the entry at the given index, or an empty string if the index is negative.
      *
      * @param index the index to return the entry of, where `0` is the newest entry and `-1` returns an empty string
-     * @return the entry at the given index, or an empty string if the index is `-1`
      * @throws if the index is out of bounds and not `-1`
      */
     getEntry(index: number): string {
@@ -389,9 +378,6 @@ export class InputHistory {
      * entry.
      *
      * The read counter is decremented if possible.
-     *
-     * @return the next (newer) entry in the history, or an empty string if the read index has gone past the newest
-     * entry
      */
     nextEntry(): string {
         this.index--;
@@ -406,9 +392,6 @@ export class InputHistory {
      * entry.
      *
      * The read counter is incremented if possible.
-     *
-     * @return the previous (older) entry in the history, or the oldest entry if the read index is already at the oldest
-     * entry
      */
     previousEntry(): string {
         this.index++;
diff --git a/src/main/js/UserList.ts b/src/main/js/UserList.ts
index 5c84c6d..46f182c 100644
--- a/src/main/js/UserList.ts
+++ b/src/main/js/UserList.ts
@@ -26,8 +26,6 @@ export class UserList {
 
     /**
      * Returns a copy of the list of all users.
-     *
-     * @return a copy of the list of all users
      */
     get users(): User[] {
         return this._users.slice();
@@ -38,7 +36,6 @@ export class UserList {
      * Returns `true` if and only if a user with the given name exists.
      *
      * @param name the name of the user to check
-     * @return `true` if and only if a user with the given name exists
      */
     has(name: string): boolean {
         return this.get(name) !== undefined;
@@ -48,7 +45,6 @@ export class UserList {
      * Returns the user with the given name, or `undefined` if there is no such user.
      *
      * @param name the name of the user to return
-     * @return the user with the given name, or `undefined` if there is no such user
      */
     get(name: string): User | undefined {
         return this._users.find(it => it.name === name);