diff --git a/src/database/index.ts b/src/database/index.ts
index 9d8a9dbd..c8670421 100644
--- a/src/database/index.ts
+++ b/src/database/index.ts
@@ -23,6 +23,9 @@ get()
   })
   .catch(() => {})
 
+/**
+ * The complate database content.
+ */
 export type Database = {
   raw: Awaited<ReturnType<typeof getAllValidData>>
   cache: Awaited<ReturnType<typeof getCache>>
diff --git a/src/main/mainWindow.ts b/src/main/mainWindow.ts
index 9f06f321..094da1ad 100644
--- a/src/main/mainWindow.ts
+++ b/src/main/mainWindow.ts
@@ -11,6 +11,9 @@ const debug = Debug("main:main")
 
 let mainWindow: BrowserWindow | undefined = undefined
 
+/**
+ * Creates the main window with the loaded database and returns its instance.
+ */
 export const createMainWindow = async (database: Database) => {
   if (mainWindow === undefined) {
     debug("Create Window ...")
diff --git a/src/main/nativeTheme.ts b/src/main/nativeTheme.ts
index c7471b49..2adebd36 100644
--- a/src/main/nativeTheme.ts
+++ b/src/main/nativeTheme.ts
@@ -3,6 +3,9 @@ import { Theme } from "../shared/settings/GlobalSettings.ts"
 import { getGlobalSettings } from "../shared/settings/main.ts"
 import { assertExhaustive } from "../shared/utils/typeSafety.ts"
 
+/**
+ * Sets the native theme for the application.
+ */
 export const setNativeTheme = (theme: Theme | undefined) => {
   switch (theme) {
     case Theme.Dark:
@@ -22,6 +25,9 @@ export const setNativeTheme = (theme: Theme | undefined) => {
 const DARK = "#111111"
 const LIGHT = "#f0f0f0"
 
+/**
+ * Returns the background color for each window based on the theme.
+ */
 export const getWindowBackgroundColor = (theme: Theme | undefined) => {
   switch (theme) {
     case Theme.Dark:
@@ -35,6 +41,9 @@ export const getWindowBackgroundColor = (theme: Theme | undefined) => {
   }
 }
 
+/**
+ * Sets the background color for all windows based on the theme.
+ */
 export const setBackgroundColorForAllWindows = (theme: Theme | undefined) => {
   const color = getWindowBackgroundColor(theme)
 
@@ -43,6 +52,10 @@ export const setBackgroundColorForAllWindows = (theme: Theme | undefined) => {
   })
 }
 
+/**
+ * Attaches a listener to native theme changes that updates all windows on each
+ * change.
+ */
 export const handleNativeThemeChanges = () => {
   nativeTheme.on("updated", () => {
     setBackgroundColorForAllWindows(getGlobalSettings().theme)
diff --git a/src/main/settingsWindow.ts b/src/main/settingsWindow.ts
index 34aaaf50..2dcd4147 100644
--- a/src/main/settingsWindow.ts
+++ b/src/main/settingsWindow.ts
@@ -15,6 +15,10 @@ const debug = Debug("main:settings")
 
 let settingsWindow: BrowserWindow | undefined = undefined
 
+/**
+ * Creates the settings window with the loaded database and a handler that gets
+ * called then the locale is changed and returns its instance.
+ */
 export const createSettingsWindow = async (
   database: Database,
   onLocaleChanged: (newLocale: string | undefined) => void,
diff --git a/src/main/updater.ts b/src/main/updater.ts
index efef3667..060f2df1 100644
--- a/src/main/updater.ts
+++ b/src/main/updater.ts
@@ -147,6 +147,10 @@ const prepareUpdaterWindowForAvailableUpdate = (
   })
 }
 
+/**
+ * Checks for updates on startup and returns a `Promise` that resolves to `true`
+ * if an update is available.
+ */
 export const checkForUpdatesOnStartup = async (database: Database) => {
   debug("checking for updates ...")
 
@@ -172,6 +176,10 @@ export const checkForUpdatesOnStartup = async (database: Database) => {
   }
 }
 
+/**
+ * Checks for updates when the user manually requests to and returns a `Promise`
+ * that resolves to `true` if an update is available.
+ */
 export const checkForUpdatesOnRequest = async (database: Database) => {
   debug("checking for updates ...")
   const updaterWindow = await createUpdaterWindow(database)
diff --git a/src/main_window/external.ts b/src/main_window/external.ts
index fffd2e30..af1dd208 100644
--- a/src/main_window/external.ts
+++ b/src/main_window/external.ts
@@ -2,4 +2,7 @@ import { PreloadAPI } from "../main_window_preload/index.ts"
 
 type EnhancedWindow = Window & typeof globalThis & { optolith: PreloadAPI }
 
+/**
+ * The external API for the main window.
+ */
 export const ExternalAPI = (window as EnhancedWindow).optolith
diff --git a/src/main_window/hooks/isAvailable.ts b/src/main_window/hooks/isAvailable.ts
index 50087ca3..4a7759d9 100644
--- a/src/main_window/hooks/isAvailable.ts
+++ b/src/main_window/hooks/isAvailable.ts
@@ -7,6 +7,10 @@ import {
 import { selectPublications } from "../slices/databaseSlice.ts"
 import { useAppSelector } from "./redux.ts"
 
+/**
+ * Returns a function that checks if a given entry is available based on the
+ * enabled publications.
+ */
 export const useIsEntryAvailable = () => {
   const publications = useAppSelector(selectPublications)
   const includeAllPublications = useAppSelector(selectIncludeAllPublications) === true
diff --git a/src/main_window/hooks/modalState.ts b/src/main_window/hooks/modalState.ts
index 13640846..5e159c83 100644
--- a/src/main_window/hooks/modalState.ts
+++ b/src/main_window/hooks/modalState.ts
@@ -1,5 +1,8 @@
 import { useState } from "react"
 
+/**
+ * Custom hook that provides state functions tailored for modals.
+ */
 export const useModalState = () => {
   const [isOpen, setIsOpen] = useState(false)
 
diff --git a/src/main_window/hooks/professionName.ts b/src/main_window/hooks/professionName.ts
index bf5d11dc..1e2bc019 100644
--- a/src/main_window/hooks/professionName.ts
+++ b/src/main_window/hooks/professionName.ts
@@ -11,6 +11,9 @@ import {
 import { selectCustomProfessionName, selectSex } from "../slices/characterSlice.ts"
 import { useAppSelector } from "./redux.ts"
 
+/**
+ * Returns the full name of the current profession.
+ */
 export const useProfessionName = (): FullProfessionNameParts | undefined => {
   const translateMap = useTranslateMap()
   const sex = useAppSelector(selectSex)
diff --git a/src/main_window/hooks/redux.ts b/src/main_window/hooks/redux.ts
index f1b78e38..2a4e1494 100644
--- a/src/main_window/hooks/redux.ts
+++ b/src/main_window/hooks/redux.ts
@@ -1,5 +1,14 @@
 import { TypedUseSelectorHook, useDispatch, useSelector } from "react-redux"
 import { AppDispatch, RootState } from "../store.ts"
 
+/**
+ * A pre-typed hook to access the redux `dispatch` function.
+ */
 export const useAppDispatch: () => AppDispatch = useDispatch
+
+/**
+ * A pre-typed hook to access the redux store's state. This hook takes a
+ * selector function as an argument. The selector is called with the store
+ * state.
+ */
 export const useAppSelector: TypedUseSelectorHook<RootState> = useSelector
diff --git a/src/main_window/init.ts b/src/main_window/init.ts
index 75148fb8..0a76039c 100644
--- a/src/main_window/init.ts
+++ b/src/main_window/init.ts
@@ -2,6 +2,9 @@ import { createAction } from "@reduxjs/toolkit"
 import type { Database } from "../database/index.ts"
 import { GlobalSettings } from "../shared/settings/GlobalSettings.ts"
 
+/**
+ * Action to initialize the main window with required values.
+ */
 export const init = createAction<{
   database: Database
   globalSettings: GlobalSettings
diff --git a/src/main_window/selectors/adventurePointSelectors.ts b/src/main_window/selectors/adventurePointSelectors.ts
index 2ed054ad..3ee6daa5 100644
--- a/src/main_window/selectors/adventurePointSelectors.ts
+++ b/src/main_window/selectors/adventurePointSelectors.ts
@@ -29,6 +29,10 @@ import {
   selectZibiljaRituals,
 } from "../slices/characterSlice.ts"
 
+/**
+ * Adventure Points can either be spent from the main pool of adventure points
+ * or from the pool bound to a specific entry.
+ */
 export type SpentAdventurePoints = {
   general: number
   bound: number
@@ -47,16 +51,28 @@ const sumRatedMaps = (
       { general: 0, bound: 0 },
     )
 
+/**
+ * Returns the adventure points spent on attributes.
+ */
 export const selectAdventurePointsSpentOnAttributes = createSelector(selectAttributes, sumRatedMaps)
 
+/**
+ * Returns the adventure points spent on skills.
+ */
 export const selectAdventurePointsSpentOnSkills = createSelector(selectSkills, sumRatedMaps)
 
+/**
+ * Returns the adventure points spent on combat techniques.
+ */
 export const selectAdventurePointsSpentOnCombatTechniques = createSelector(
   selectCloseCombatTechniques,
   selectRangedCombatTechniques,
   sumRatedMaps,
 )
 
+/**
+ * Returns the adventure points spent on spells.
+ */
 export const selectAdventurePointsSpentOnSpells = createSelector(
   selectSpells,
   selectRituals,
@@ -72,47 +88,74 @@ export const selectAdventurePointsSpentOnSpells = createSelector(
   sumRatedMaps,
 )
 
+/**
+ * Returns the adventure points spent on liturgical chants.
+ */
 export const selectAdventurePointsSpentOnLiturgicalChants = createSelector(
   selectLiturgicalChants,
   selectCeremonies,
   sumRatedMaps,
 )
 
+/**
+ * Returns the adventure points spent on cantrips.
+ */
 export const selectAdventurePointsSpentOnCantrips = createSelector(
   selectCantrips,
   (cantrips): SpentAdventurePoints => ({ general: cantrips.length, bound: 0 }),
 )
 
+/**
+ * Returns the adventure points spent on blessings.
+ */
 export const selectAdventurePointsSpentOnBlessings = createSelector(
   selectBlessings,
   (blessings): SpentAdventurePoints => ({ general: blessings.length, bound: 0 }),
 )
 
+/**
+ * Returns the adventure points spent on advantages.
+ */
 export const selectAdventurePointsSpentOnAdvantages = createSelector(
   selectCurrentCharacter,
   (): SpentAdventurePoints => ({ general: 0, bound: 0 }),
 )
 
+/**
+ * Returns the adventure points spent on magical advantages.
+ */
 export const selectAdventurePointsSpentOnMagicalAdvantages = createSelector(
   selectCurrentCharacter,
   (): SpentAdventurePoints => ({ general: 0, bound: 0 }),
 )
 
+/**
+ * Returns the adventure points spent on blessed advantages.
+ */
 export const selectAdventurePointsSpentOnBlessedAdvantages = createSelector(
   selectCurrentCharacter,
   (): SpentAdventurePoints => ({ general: 0, bound: 0 }),
 )
 
+/**
+ * Returns the adventure points spent on disadvantages.
+ */
 export const selectAdventurePointsSpentOnDisadvantages = createSelector(
   selectCurrentCharacter,
   (): SpentAdventurePoints => ({ general: 0, bound: 0 }),
 )
 
+/**
+ * Returns the adventure points spent on magical disadvantages.
+ */
 export const selectAdventurePointsSpentOnMagicalDisadvantages = createSelector(
   selectCurrentCharacter,
   (): SpentAdventurePoints => ({ general: 0, bound: 0 }),
 )
 
+/**
+ * Returns the adventure points spent on blessed disadvantages.
+ */
 export const selectAdventurePointsSpentOnBlessedDisadvantages = createSelector(
   selectCurrentCharacter,
   (): SpentAdventurePoints => ({ general: 0, bound: 0 }),
@@ -123,11 +166,17 @@ export const selectAdventurePointsSpentOnBlessedDisadvantages = createSelector(
 //   fmap(getDisAdvantagesSubtypeMax(true))
 // )
 
+/**
+ * Returns the adventure points spent on special abilities.
+ */
 export const selectAdventurePointsSpentOnSpecialAbilities = createSelector(
   selectCurrentCharacter,
   (): SpentAdventurePoints => ({ general: 0, bound: 0 }),
 )
 
+/**
+ * Returns the adventure points spent on energies.
+ */
 export const selectAdventurePointsSpentOnEnergies = createSelector(
   selectDerivedCharacteristics,
   (derivedCharacteristics): number =>
@@ -143,16 +192,25 @@ export const selectAdventurePointsSpentOnEnergies = createSelector(
     derivedCharacteristics.karmaPoints.permanentlyLostBoughtBack * 2,
 )
 
+/**
+ * Returns the adventure points spent on race.
+ */
 export const selectAdventurePointsSpentOnRace = createSelector(
   selectCurrentCharacter,
   (): number => 0,
 )
 
+/**
+ * Returns the adventure points spent on profession.
+ */
 export const selectAdventurePointsSpentOnProfession = createSelector(
   selectCurrentCharacter,
   (): number | undefined => undefined,
 )
 
+/**
+ * Returns the adventure points spent.
+ */
 export const selectAdventurePointsSpent = createSelector(
   selectAdventurePointsSpentOnAttributes,
   selectAdventurePointsSpentOnSkills,
@@ -193,6 +251,9 @@ export const selectAdventurePointsSpent = createSelector(
     ),
 )
 
+/**
+ * Returns the available adventure points.
+ */
 export const selectAdventurePointsAvailable = createSelector(
   selectTotalAdventurePoints,
   selectAdventurePointsSpent,
diff --git a/src/main_window/selectors/characterSelectors.ts b/src/main_window/selectors/characterSelectors.ts
index 4f47d831..47b86ce9 100644
--- a/src/main_window/selectors/characterSelectors.ts
+++ b/src/main_window/selectors/characterSelectors.ts
@@ -2,16 +2,26 @@ import { createSelector } from "@reduxjs/toolkit"
 import { selectIsCharacterCreationFinished } from "../slices/characterSlice.ts"
 import { selectIsEditAfterCreationEnabled } from "../slices/settingsSlice.ts"
 
+/**
+ * Returns whether the character is still being created, i.e. the character
+ * creation has not been finished.
+ */
 export const selectIsInCharacterCreation = createSelector(
   selectIsCharacterCreationFinished,
   (isCharacterCreationFinished): boolean => !isCharacterCreationFinished,
 )
 
+/**
+ * Returns whether the more adventure points can be added to the character.
+ */
 export const selectCanAddAdventurePoints = createSelector(
   selectIsCharacterCreationFinished,
   (isCharacterCreationFinished): boolean => isCharacterCreationFinished,
 )
 
+/**
+ * Returns whether entries of the character can be removed or lowered in points.
+ */
 export const selectCanRemove = createSelector(
   selectIsCharacterCreationFinished,
   selectIsEditAfterCreationEnabled,
diff --git a/src/main_window/selectors/derivedCharacteristicsSelectors.ts b/src/main_window/selectors/derivedCharacteristicsSelectors.ts
index ce4ae5c0..fddb47e0 100644
--- a/src/main_window/selectors/derivedCharacteristicsSelectors.ts
+++ b/src/main_window/selectors/derivedCharacteristicsSelectors.ts
@@ -51,6 +51,10 @@ import {
 import { selectIsInCharacterCreation } from "./characterSelectors.ts"
 import { selectCurrentRace } from "./raceSelectors.ts"
 
+/**
+ * A combination of a static derived characteristic and its corresponding
+ * derived values, extended by value bounds.
+ */
 export type DisplayedDerivedCharacteristic<T extends DCId = DCId> = {
   id: T
   base: number
@@ -66,6 +70,10 @@ export type DisplayedDerivedCharacteristic<T extends DCId = DCId> = {
   static: DerivedCharacteristic
 }
 
+/**
+ * A combination of a static energy and its corresponding derived values,
+ * extended by value bounds.
+ */
 export type DisplayedEnergy<T extends EnergyIdentifier = EnergyIdentifier> = {
   id: T
   base: number
@@ -81,9 +89,15 @@ export type DisplayedEnergy<T extends EnergyIdentifier = EnergyIdentifier> = {
   static: DerivedCharacteristic
 }
 
+/**
+ * Checks if a displayed derived characteristic is an energy.
+ */
 export const isDisplayedEnergy = (dc: DisplayedDerivedCharacteristic): dc is DisplayedEnergy =>
   dc.id === DCId.LifePoints || dc.id === DCId.ArcaneEnergy || dc.id === DCId.KarmaPoints
 
+/**
+ * Returns the static and dynamic values for life points.
+ */
 export const selectLifePoints = createSelector(
   selectCurrentRace,
   createPropertySelector(selectAttributes, AttributeIdentifier.Constitution),
@@ -127,6 +141,9 @@ export const selectLifePoints = createSelector(
   },
 )
 
+/**
+ * Returns the static and dynamic values for arcane energy.
+ */
 export const selectArcaneEnergy = createSelector(
   createPropertySelector(selectAdvantages, AdvantageIdentifier.Spellcaster),
   selectMagicalTraditions,
@@ -201,6 +218,9 @@ export const selectArcaneEnergy = createSelector(
   },
 )
 
+/**
+ * Returns the static and dynamic values for karma points.
+ */
 export const selectKarmaPoints = createSelector(
   createPropertySelector(selectAdvantages, AdvantageIdentifier.Blessed),
   selectBlessedTraditions,
@@ -268,6 +288,9 @@ export const selectKarmaPoints = createSelector(
 const divideAttributeSumByRound = (attributes: (Rated | undefined)[], divisor: number) =>
   Math.round(attributes.reduce((acc, attr) => acc + attributeValue(attr), 0) / divisor)
 
+/**
+ * Returns the static and dynamic values for spirit.
+ */
 export const selectSpirit = createSelector(
   selectCurrentRace,
   createPropertySelector(selectAttributes, AttributeIdentifier.Courage),
@@ -303,6 +326,9 @@ export const selectSpirit = createSelector(
   },
 )
 
+/**
+ * Returns the static and dynamic values for toughness.
+ */
 export const selectToughness = createSelector(
   selectCurrentRace,
   createPropertySelector(selectAttributes, AttributeIdentifier.Constitution),
@@ -336,6 +362,9 @@ export const selectToughness = createSelector(
   },
 )
 
+/**
+ * Returns the static and dynamic values for dodge.
+ */
 export const selectDodge = createSelector(
   createPropertySelector(selectAttributes, AttributeIdentifier.Agility),
   createPropertySelector(selectActiveOptionalRules, OptionalRuleIdentifier.HigherDefenseStats),
@@ -363,6 +392,9 @@ export const selectDodge = createSelector(
   },
 )
 
+/**
+ * Returns the static and dynamic values for initiative.
+ */
 export const selectInitiative = createSelector(
   createPropertySelector(selectAttributes, AttributeIdentifier.Courage),
   createPropertySelector(selectAttributes, AttributeIdentifier.Agility),
@@ -396,6 +428,9 @@ export const selectInitiative = createSelector(
   },
 )
 
+/**
+ * Returns the static and dynamic values for movement.
+ */
 export const selectMovement = createSelector(
   selectCurrentRace,
   createPropertySelector(selectAdvantages, AdvantageIdentifier.Nimble),
@@ -441,6 +476,9 @@ export const selectMovement = createSelector(
   },
 )
 
+/**
+ * Returns the static and dynamic values for wound threshold.
+ */
 export const selectWoundThreshold = createSelector(
   createPropertySelector(selectAttributes, AttributeIdentifier.Constitution),
   createPropertySelector(selectAdvantages, AdvantageIdentifier.Unyielding),
@@ -474,6 +512,9 @@ export const selectWoundThreshold = createSelector(
   },
 )
 
+/**
+ * Returns the static and dynamic values for fate points.
+ */
 export const selectFatePoints = createSelector(
   createPropertySelector(selectAdvantages, AdvantageIdentifier.Luck),
   createPropertySelector(selectDisadvantages, DisadvantageIdentifier.BadLuck),
@@ -501,6 +542,9 @@ export const selectFatePoints = createSelector(
   },
 )
 
+/**
+ * Returns static and dynamic values for all derived characteristics.
+ */
 export const selectDerivedCharacteristics = createSelector(
   selectLifePoints,
   selectArcaneEnergy,
diff --git a/src/main_window/selectors/experienceLevelSelectors.ts b/src/main_window/selectors/experienceLevelSelectors.ts
index 368df94b..266797dc 100644
--- a/src/main_window/selectors/experienceLevelSelectors.ts
+++ b/src/main_window/selectors/experienceLevelSelectors.ts
@@ -7,6 +7,9 @@ import {
 } from "../slices/characterSlice.ts"
 import { selectExperienceLevels } from "../slices/databaseSlice.ts"
 
+/**
+ * Returns the experience level the character started with.
+ */
 export const selectStartExperienceLevel = createSelector(
   selectExperienceLevels,
   selectExperienceLevelStartId,
@@ -14,6 +17,10 @@ export const selectStartExperienceLevel = createSelector(
     experienceLevelStartId === undefined ? undefined : experienceLevels[experienceLevelStartId],
 )
 
+/**
+ * Returns the experience level the character has reached with the current
+ * amount of adventure points.
+ */
 export const selectCurrentExperienceLevel = createSelector(
   selectExperienceLevels,
   selectTotalAdventurePoints,
@@ -23,6 +30,9 @@ export const selectCurrentExperienceLevel = createSelector(
       : getCurrentExperienceLevel(experienceLevels, totalAdventurePoints),
 )
 
+/**
+ * Returns the maximum number of attribute points that can be spent.
+ */
 export const selectMaximumTotalAttributePoints = createSelector(
   selectStartExperienceLevel,
   (experienceLevel): number => experienceLevel?.max_attribute_total ?? 0,
diff --git a/src/main_window/selectors/personalDataSelectors.ts b/src/main_window/selectors/personalDataSelectors.ts
index 56f19061..57864dde 100644
--- a/src/main_window/selectors/personalDataSelectors.ts
+++ b/src/main_window/selectors/personalDataSelectors.ts
@@ -17,6 +17,10 @@ import { selectEyeColors, selectHairColors, selectSocialStatuses } from "../slic
 import { selectCurrentCulture } from "./cultureSelectors.ts"
 import { selectCurrentRace, selectCurrentRaceVariant } from "./raceSelectors.ts"
 
+/**
+ * Returns the social statuses that are available for the character based on
+ * the culture.
+ */
 export const selectAvailableSocialStatuses = createSelector(
   selectCurrentCulture,
   selectSocialStatusDependencies,
@@ -40,6 +44,11 @@ export const selectAvailableSocialStatuses = createSelector(
 const ALBINO = 1
 const GREEN_HAIR = 3
 
+/**
+ * Returns a array containing 20 hair color identifiers that mirror the
+ * probabilities used for randomly rolling a die and that are available for the
+ * character based on the race.
+ */
 export const selectAvailableHairColorsIdDice = createSelector(
   selectCurrentRace,
   selectCurrentRaceVariant,
@@ -66,6 +75,10 @@ export const selectAvailableHairColorsIdDice = createSelector(
   },
 )
 
+/**
+ * Returns the hair colors that are available for the character based on the
+ * race.
+ */
 export const selectAvailableHairColors = createSelector(
   selectAvailableHairColorsIdDice,
   selectHairColors,
@@ -73,6 +86,11 @@ export const selectAvailableHairColors = createSelector(
     filterNonNullable(unique(hairColorIds).map(id => hairColors[id])),
 )
 
+/**
+ * Returns a array containing 20 eye color identifiers that mirror the
+ * probabilities used for randomly rolling a die and that are available for the
+ * character based on the race.
+ */
 export const selectAvailableEyeColorsIdDice = createSelector(
   selectCurrentRace,
   selectCurrentRaceVariant,
@@ -96,6 +114,10 @@ export const selectAvailableEyeColorsIdDice = createSelector(
   },
 )
 
+/**
+ * Returns the eye colors that are available for the character based on the
+ * race.
+ */
 export const selectAvailableEyeColors = createSelector(
   selectAvailableEyeColorsIdDice,
   selectEyeColors,
@@ -103,6 +125,9 @@ export const selectAvailableEyeColors = createSelector(
     filterNonNullable(unique(eyeColorIds).map(id => eyeColors[id])),
 )
 
+/**
+ * Returns the configuration for random height generation.
+ */
 export const selectRandomHeightCalculation = createSelector(
   selectCurrentRace,
   selectCurrentRaceVariant,
@@ -113,6 +138,9 @@ export const selectRandomHeightCalculation = createSelector(
       : { base: 0, random: [] }),
 )
 
+/**
+ * Returns the configuration for random weight generation.
+ */
 export const selectRandomWeightCalculation = createSelector(
   selectCurrentRace,
   (currentRace): Weight => currentRace?.weight ?? { base: 0, random: [] },
diff --git a/src/main_window/selectors/professionSelectors.ts b/src/main_window/selectors/professionSelectors.ts
index 1f9379de..8eb48bfd 100644
--- a/src/main_window/selectors/professionSelectors.ts
+++ b/src/main_window/selectors/professionSelectors.ts
@@ -13,6 +13,9 @@ import {
 import { selectProfessions } from "../slices/databaseSlice.ts"
 import { selectStartExperienceLevel } from "./experienceLevelSelectors.ts"
 
+/**
+ * Returns different selected parts of a base profession.
+ */
 export const selectCurrentProfession = createSelector(
   selectProfessions,
   selectProfessionId,
@@ -27,6 +30,9 @@ export const selectCurrentProfession = createSelector(
   },
 )
 
+/**
+ * Returns the current profession variant.
+ */
 export const selectCurrentProfessionVariant = createSelector(
   selectCurrentProfession,
   selectProfessionVariantId,
diff --git a/src/main_window/store.ts b/src/main_window/store.ts
index 9b9b7b91..bcada56a 100644
--- a/src/main_window/store.ts
+++ b/src/main_window/store.ts
@@ -17,9 +17,19 @@ const sliceReducer = combineReducers({
 
 const reducer = reduceReducers(sliceReducer, globalReducer)
 
+/**
+ * The Redux store for the main window.
+ */
 export const store = configureStore({
   reducer,
 })
 
+/**
+ * The root state of the Redux store.
+ */
 export type RootState = ReturnType<typeof sliceReducer>
+
+/**
+ * A pre-typed version of the dispatch function.
+ */
 export type AppDispatch = typeof store.dispatch
diff --git a/src/settings_window/root.tsx b/src/settings_window/root.tsx
index 317439c0..da9e723c 100644
--- a/src/settings_window/root.tsx
+++ b/src/settings_window/root.tsx
@@ -20,6 +20,9 @@ type Props = {
   initialSettings: GlobalSettings
 }
 
+/**
+ * Root component for the settings window.
+ */
 export const Root: React.FC<Props> = props => {
   const { locales, initialSettings } = props