diff --git a/interface/matrix.go b/interface/matrix.go
index 95122cc..40710ac 100644
--- a/interface/matrix.go
+++ b/interface/matrix.go
@@ -25,16 +25,21 @@ type MatrixContainer interface {
 	Client() *gomatrix.Client
 	InitClient() error
 	Initialized() bool
-	Login(user, password string) error
+
 	Start()
 	Stop()
+
+	Login(user, password string) error
+
 	SendMessage(roomID, msgtype, message string) (string, error)
 	SendMarkdownMessage(roomID, msgtype, message string) (string, error)
 	SendTyping(roomID string, typing bool)
 	JoinRoom(roomID string) (*rooms.Room, error)
 	LeaveRoom(roomID string) error
+
 	GetHistory(roomID, prevBatch string, limit int) ([]gomatrix.Event, string, error)
 	GetRoom(roomID string) *rooms.Room
+
 	Download(mxcURL string) ([]byte, string, string, error)
 	GetCachePath(homeserver, fileID string) string
 }
diff --git a/interface/ui.go b/interface/ui.go
index add3ee7..e487d3e 100644
--- a/interface/ui.go
+++ b/interface/ui.go
@@ -25,21 +25,13 @@ import (
 	"maunium.net/go/tcell"
 )
 
-type View string
-
-// Allowed views in GomuksUI
-const (
-	ViewLogin View = "login"
-	ViewMain  View = "main"
-)
-
 type UIProvider func(gmx Gomuks) GomuksUI
 
 type GomuksUI interface {
 	Render()
-	SetView(name View)
+	OnLogin()
+	OnLogout()
 	MainView() MainView
-	LoginView() LoginView
 
 	Init()
 	Start() error
@@ -62,9 +54,6 @@ type MainView interface {
 	NotifyMessage(room *rooms.Room, message Message, should pushrules.PushActionArrayShould)
 }
 
-type LoginView interface {
-}
-
 type MessageDirection int
 
 const (
diff --git a/matrix/matrix.go b/matrix/matrix.go
index 4ed2dd9..6cf6201 100644
--- a/matrix/matrix.go
+++ b/matrix/matrix.go
@@ -135,11 +135,6 @@ func (c *Container) Stop() {
 	}
 }
 
-// Client returns the underlying gomatrix client object.
-func (c *Container) Client() *gomatrix.Client {
-	return c.client
-}
-
 // UpdatePushRules fetches the push notification rules from the server and stores them in the current Session object.
 func (c *Container) UpdatePushRules() {
 	debug.Print("Updating push rules...")
@@ -160,12 +155,14 @@ func (c *Container) PushRules() *pushrules.PushRuleset {
 
 // OnLogout stops the syncer and moves the UI back to the login view.
 func (c *Container) OnLogout() {
+	c.ui.OnLogout()
 	c.Stop()
-	c.ui.SetView(ifc.ViewLogin)
 }
 
 // OnLogin initializes the syncer and updates the room list.
 func (c *Container) OnLogin() {
+	c.ui.OnLogin()
+
 	c.client.Store = c.config.Session
 
 	debug.Print("Initializing syncer")
@@ -191,7 +188,6 @@ func (c *Container) OnLogin() {
 func (c *Container) Start() {
 	defer debug.Recover()
 
-	c.ui.SetView(ifc.ViewMain)
 	c.OnLogin()
 
 	if c.client == nil {
@@ -349,7 +345,7 @@ func (c *Container) SendMessage(roomID, msgtype, text string) (string, error) {
 	return resp.EventID, nil
 }
 
-func (c *Container) RenderMarkdown(text string) string {
+func (c *Container) renderMarkdown(text string) string {
 	parser := blackfriday.New(
 		blackfriday.WithExtensions(blackfriday.NoIntraEmphasis |
 			blackfriday.Tables |
@@ -377,10 +373,14 @@ func (c *Container) RenderMarkdown(text string) string {
 var mentionRegex = regexp.MustCompile("\\[(.+?)]\\(https://matrix.to/#/@.+?:.+?\\)")
 var roomRegex = regexp.MustCompile("\\[.+?]\\(https://matrix.to/#/(#.+?:[^/]+?)\\)")
 
+// SendMarkdownMessage sends a message with the given text to the given room.
+//
+// If the given text contains markdown formatting symbols, it will be rendered into HTML before sending.
+// Otherwise, it will be sent as plain text.
 func (c *Container) SendMarkdownMessage(roomID, msgtype, text string) (string, error) {
 	defer debug.Recover()
 
-	html := c.RenderMarkdown(text)
+	html := c.renderMarkdown(text)
 	if html == text {
 		return c.SendMessage(roomID, msgtype, text)
 	}
@@ -474,6 +474,9 @@ func (c *Container) GetRoom(roomID string) *rooms.Room {
 
 var mxcRegex = regexp.MustCompile("mxc://(.+)/(.+)")
 
+// Download fetches the given Matrix content (mxc) URL and returns the data, homeserver, file ID and potential errors.
+//
+// The file will be either read from the media cache (if found) or downloaded from the server.
 func (c *Container) Download(mxcURL string) (data []byte, hs, id string, err error) {
 	parts := mxcRegex.FindStringSubmatch(mxcURL)
 	if parts == nil || len(parts) != 3 {
@@ -519,6 +522,8 @@ func (c *Container) download(hs, id, cacheFile string) (data []byte, err error)
 	return
 }
 
+// GetCachePath gets the path to the cached version of the given homeserver:fileID combination.
+// The file may or may not exist, use Download() to ensure it has been cached.
 func (c *Container) GetCachePath(homeserver, fileID string) string {
 	dir := filepath.Join(c.config.MediaDir, homeserver)
 
diff --git a/ui/ui.go b/ui/ui.go
index ffd6fc6..2f45f27 100644
--- a/ui/ui.go
+++ b/ui/ui.go
@@ -22,6 +22,14 @@ import (
 	"maunium.net/go/tview"
 )
 
+type View string
+
+// Allowed views in GomuksUI
+const (
+	ViewLogin View = "login"
+	ViewMain  View = "main"
+)
+
 type GomuksUI struct {
 	gmx   ifc.Gomuks
 	app   *tview.Application
@@ -68,20 +76,24 @@ func (ui *GomuksUI) Render() {
 	ui.app.Draw()
 }
 
-func (ui *GomuksUI) SetView(name ifc.View) {
+func (ui *GomuksUI) OnLogin() {
+	ui.SetView(ViewMain)
+}
+
+func (ui *GomuksUI) OnLogout() {
+	ui.SetView(ViewLogin)
+}
+
+func (ui *GomuksUI) SetView(name View) {
 	ui.views.SwitchToPage(string(name))
 }
 
 func (ui *GomuksUI) InitViews() tview.Primitive {
-	ui.views.AddPage(string(ifc.ViewLogin), ui.NewLoginView(), true, true)
-	ui.views.AddPage(string(ifc.ViewMain), ui.NewMainView(), true, false)
+	ui.views.AddPage(string(ViewLogin), ui.NewLoginView(), true, true)
+	ui.views.AddPage(string(ViewMain), ui.NewMainView(), true, false)
 	return ui.views
 }
 
 func (ui *GomuksUI) MainView() ifc.MainView {
 	return ui.mainView
 }
-
-func (ui *GomuksUI) LoginView() ifc.LoginView {
-	return ui.loginView
-}