diff --git a/scripts/common/class.lua b/scripts/common/class.lua
index 4c7f409..b3ed3ab 100644
--- a/scripts/common/class.lua
+++ b/scripts/common/class.lua
@@ -1,3 +1,7 @@
+---Member lookup helper function
+---@param key string
+---@param bases any
+---@return any
 local function search(key, bases)
     for _, base in ipairs(bases) do
         local v = base[key]     -- try `i'-th superclass
@@ -5,25 +9,27 @@ local function search(key, bases)
     end
 end
 
----Declare table as polimorphic class
+---Create polimorphic class
 ---@generic BaseT, T
 ---@param cls T # class metatable
 ---@param o? table # initial parameters
 ---@param ... BaseT # base class metatables (if any)
 ---@return T # class instance
-function CreateClass(cls, o, ...)
+function CreateInstance(cls, o, ...)
     o = o or {}
     local nargs = select("#", ...)
     local vargs = { select(1, ...) }
     cls.__index = cls
     if nargs == 1 then
+        -- single inheritance
         local base = vargs[1]
         setmetatable(cls, {__index = base})
-        o = base:new(o)
+        o = base.new(o)
     elseif nargs > 1 then
+        -- multiple inheritance (note: slow(er) member lookup)
         setmetatable(cls, {__index = function(t, k) return search(k, vargs) end})
         for _, base in ipairs(vargs) do
-            o = base:new(o)
+            o = base.new(o)
         end
     end
     setmetatable(o, cls)
diff --git a/scripts/components/pager/containerfield.lua b/scripts/components/pager/containerfield.lua
index bf912c0..49a1426 100644
--- a/scripts/components/pager/containerfield.lua
+++ b/scripts/components/pager/containerfield.lua
@@ -10,14 +10,14 @@ local ContainerField = {
 ---Create a new ContainerField instance
 ---@param o? table # initial parameters
 ---@return ContainerField
-function ContainerField:new(o)
+function ContainerField.new(o)
     o = o or {}
 
     --set instance members
 
     o.content = o.content or {}
 
-    local this = CreateClass(self, o, Field)
+    local this = CreateInstance(ContainerField, o, Field)
 
     this:refreshFields()
 
diff --git a/scripts/components/pager/field.lua b/scripts/components/pager/field.lua
index 14a292a..8e5ab0d 100644
--- a/scripts/components/pager/field.lua
+++ b/scripts/components/pager/field.lua
@@ -13,7 +13,7 @@ local Field = {
 ---Create a new Field instance
 ---@param o? table # initial parameters
 ---@return Field
-function Field:new(o)
+function Field.new(o)
     o = o or {}
 
     --set instance members
@@ -24,7 +24,7 @@ function Field:new(o)
     o.aabbW = o.aabbW or 0
     o.aabbH = o.aabbH or 0
 
-    return CreateClass(self, o)
+    return CreateInstance(Field, o)
 end
 
 ---Get the containing top-level parent page
diff --git a/scripts/components/pager/linkfield.lua b/scripts/components/pager/linkfield.lua
index 19c85ba..107d9a1 100644
--- a/scripts/components/pager/linkfield.lua
+++ b/scripts/components/pager/linkfield.lua
@@ -10,12 +10,12 @@ local LinkField = {
 ---Create a new LinkField instance
 ---@param o? table # initial parameters
 ---@return LinkField
-function LinkField:new(o)
+function LinkField.new(o)
     o = o or {}
 
     o.link = o.link or nil
 
-    return CreateClass(self, o, Field)
+    return CreateInstance(LinkField, o, Field)
 end
 
 ---@param button integer # options are under the `game` table prefixed with `BUTTON`
diff --git a/scripts/components/pager/page.lua b/scripts/components/pager/page.lua
index b623603..8496f0f 100644
--- a/scripts/components/pager/page.lua
+++ b/scripts/components/pager/page.lua
@@ -11,7 +11,7 @@ local Page = {
 ---Create a new Page instance
 ---@param o? table # initial parameters
 ---@return Page
-function Page:new(o)
+function Page.new(o)
     o = o or {}
 
     --set instance members
@@ -19,7 +19,7 @@ function Page:new(o)
     o.content = o.content or {}
     o.viewHandler = o.viewHandler or nil
 
-    return CreateClass(self, o)
+    return CreateInstance(Page, o)
 end
 
 ---Add field to page
diff --git a/scripts/components/pager/pageview.lua b/scripts/components/pager/pageview.lua
index 9d71a07..4fa2725 100644
--- a/scripts/components/pager/pageview.lua
+++ b/scripts/components/pager/pageview.lua
@@ -17,7 +17,7 @@ end
 ---Create a new PageView instance
 ---@param rootPage Page
 ---@return PageView
-function PageView:new(rootPage)
+function PageView.new(rootPage)
     local o = {}
 
     --set viewHandler as this instance for rootPage
@@ -29,7 +29,7 @@ function PageView:new(rootPage)
     o.pageStack = {}
     pushStack(o.pageStack, rootPage)
 
-    return CreateClass(self, o)
+    return CreateInstance(PageView, o)
 end
 
 ---Get page from pageStack
diff --git a/scripts/titlescreen/boot.lua b/scripts/titlescreen/boot.lua
index 4cfe557..ce94260 100644
--- a/scripts/titlescreen/boot.lua
+++ b/scripts/titlescreen/boot.lua
@@ -3,8 +3,8 @@ local Wallpaper = require("components.wallpaper")
 local BootPage = require("titlescreen.pages.boot.bootpage")
 local PageView = require("components.pager.pageview")
 
-local bootpage = BootPage:new()
-local pageview = PageView:new(bootpage)
+local bootpage = BootPage.new()
+local pageview = PageView.new(bootpage)
 
 local function render(deltaTime)
     Dim.updateResolution()
diff --git a/scripts/titlescreen/fields/boot/checkupdatefield.lua b/scripts/titlescreen/fields/boot/checkupdatefield.lua
index fea7794..13b84e1 100644
--- a/scripts/titlescreen/fields/boot/checkupdatefield.lua
+++ b/scripts/titlescreen/fields/boot/checkupdatefield.lua
@@ -14,13 +14,13 @@ local CheckUpdateField = {
 ---Create a new CheckUpdateField instance
 ---@param o? table # initial parameters
 ---@return CheckUpdateField
-function CheckUpdateField:new(o)
+function CheckUpdateField.new(o)
     o = o or {}
 
     o._timer = o._timer or 0
     o.onUpdateAvailable = o.onUpdateAvailable or nil
 
-    local this = CreateClass(self, o, ServiceField)
+    local this = CreateInstance(CheckUpdateField, o, ServiceField)
 
     this._url = nil
     this._version = nil
diff --git a/scripts/titlescreen/fields/boot/dialogfield.lua b/scripts/titlescreen/fields/boot/dialogfield.lua
index 417a065..6d1bc99 100644
--- a/scripts/titlescreen/fields/boot/dialogfield.lua
+++ b/scripts/titlescreen/fields/boot/dialogfield.lua
@@ -37,13 +37,13 @@ local DialogField = {
 ---Inherits from ContainerField
 ---@param o ContainerField
 ---@return DialogField
-function DialogField:new(o)
+function DialogField.new(o)
     o = o or {}
 
-    o.aabbW = o.aabbW or self.DEFAULT_WIDTH
-    o.aabbH = o.aabbH or self.DEFAULT_HEIGHT
+    o.aabbW = o.aabbW or DialogField.DEFAULT_WIDTH
+    o.aabbH = o.aabbH or DialogField.DEFAULT_HEIGHT
 
-    local this = CreateClass(self, o, ContainerField)
+    local this = CreateInstance(DialogField, o, ContainerField)
 
     this._symbolMargin = 8
     this._symbolSize = 48
diff --git a/scripts/titlescreen/fields/boot/selftestfield.lua b/scripts/titlescreen/fields/boot/selftestfield.lua
index 87f6bd9..3c955d1 100644
--- a/scripts/titlescreen/fields/boot/selftestfield.lua
+++ b/scripts/titlescreen/fields/boot/selftestfield.lua
@@ -34,7 +34,7 @@ local SelfTestField = {
 ---Create a new SelfTestField instance
 ---@param o? table
 ---@return SelfTestField
-function SelfTestField:new(o)
+function SelfTestField.new(o)
     o = o or {}
 
     o.status = o.status or SelfTestStatusEnum.IDLE
@@ -45,7 +45,7 @@ function SelfTestField:new(o)
         "Failed to construct SelfTestField, checkTask is mandatory when onStatusChange is defined!\n" .. debug.traceback()
     )
 
-    return CreateClass(self, o, ServiceField)
+    return CreateInstance(SelfTestField, o, ServiceField)
 end
 
 function SelfTestField:_closeThread()
diff --git a/scripts/titlescreen/fields/service/colorgradientfield.lua b/scripts/titlescreen/fields/service/colorgradientfield.lua
index 2c6366b..97302eb 100644
--- a/scripts/titlescreen/fields/service/colorgradientfield.lua
+++ b/scripts/titlescreen/fields/service/colorgradientfield.lua
@@ -13,12 +13,12 @@ local ColorGradientField = {
 ---Create a new ColorGradientField instance
 ---@param o? table # initial parameters
 ---@return ColorGradientField
-function ColorGradientField:new(o)
+function ColorGradientField.new(o)
     o = o or {}
 
     o.value = o.value or {0, 0, 0, 255}
 
-    return CreateClass(self, o, ServiceField)
+    return CreateInstance(ColorGradientField, o, ServiceField)
 end
 
 ---@param obj? any # message object for the field
diff --git a/scripts/titlescreen/fields/service/inputbuttonfield.lua b/scripts/titlescreen/fields/service/inputbuttonfield.lua
index a9af384..294a455 100644
--- a/scripts/titlescreen/fields/service/inputbuttonfield.lua
+++ b/scripts/titlescreen/fields/service/inputbuttonfield.lua
@@ -10,12 +10,12 @@ local InputButtonField = {
 ---Create a new InputButtonField instance
 ---@param o? table # initial parameters
 ---@return InputButtonField
-function InputButtonField:new(o)
+function InputButtonField.new(o)
     o = o or {}
 
     o.button = o.button or nil
 
-    return CreateClass(self, o, ServiceField)
+    return CreateInstance(InputButtonField, o, ServiceField)
 end
 
 ---@param obj? any # message object for the field
diff --git a/scripts/titlescreen/fields/service/inputknobfield.lua b/scripts/titlescreen/fields/service/inputknobfield.lua
index 2fde1cb..e2840c0 100644
--- a/scripts/titlescreen/fields/service/inputknobfield.lua
+++ b/scripts/titlescreen/fields/service/inputknobfield.lua
@@ -18,12 +18,12 @@ local InputKnobField = {
 ---Create a new InputKnobField instance
 ---@param o? table # initial parameters
 ---@return InputKnobField
-function InputKnobField:new(o)
+function InputKnobField.new(o)
     o = o or {}
 
     o.knob = o.knob or nil
 
-    return CreateClass(self, o, ServiceField)
+    return CreateInstance(InputKnobField, o, ServiceField)
 end
 
 ---@param obj? any # message object for the field
diff --git a/scripts/titlescreen/fields/service/listfield.lua b/scripts/titlescreen/fields/service/listfield.lua
index b25de81..554826b 100644
--- a/scripts/titlescreen/fields/service/listfield.lua
+++ b/scripts/titlescreen/fields/service/listfield.lua
@@ -15,14 +15,14 @@ local ListField = {
 ---Create a new ListField instance
 ---@param o? table # initial parameters
 ---@return ListField
-function ListField:new(o)
+function ListField.new(o)
     o = o or {}
 
     --set instance members
     o.selectedIndex = o.selectedIndex or 1
     o.locked = o.locked or false
 
-    local this = CreateClass(self, o, ContainerField, ServiceField)
+    local this = CreateInstance(ListField, o, ContainerField, ServiceField)
 
     local minW = this.MARGIN[1] + this.PADDING[1] + this.PADDING[3] + this.MARGIN[3]
     local minH = this.MARGIN[2] + this.PADDING[2] + this.PADDING[4] + this.MARGIN[4]
diff --git a/scripts/titlescreen/fields/service/servicefield.lua b/scripts/titlescreen/fields/service/servicefield.lua
index 732d9f7..3c7f708 100644
--- a/scripts/titlescreen/fields/service/servicefield.lua
+++ b/scripts/titlescreen/fields/service/servicefield.lua
@@ -35,10 +35,10 @@ local ServiceField = {
 ---Create a new ServiceField instance
 ---@param o? table # initial parameters
 ---@return ServiceField
-function ServiceField:new(o)
+function ServiceField.new(o)
     o = o or {}
 
-    local h = self.FONT_SIZE + self.MARGIN[2] + self.MARGIN[4]
+    local h = ServiceField.FONT_SIZE + ServiceField.MARGIN[2] + ServiceField.MARGIN[4]
 
     o.aabbH = o.aabbH or h
     o.aabbW = o.aabbW or Dim.design.width --:shrug:
@@ -49,7 +49,7 @@ function ServiceField:new(o)
 
     o._state = ServiceFieldState.INACTIVE
 
-    local this = CreateClass(self, o, Field)
+    local this = CreateInstance(ServiceField, o, Field)
 
     if this.aabbH < h then
         this.aabbH = h
diff --git a/scripts/titlescreen/fields/service/servicelinkfield.lua b/scripts/titlescreen/fields/service/servicelinkfield.lua
index b469ba4..384f10b 100644
--- a/scripts/titlescreen/fields/service/servicelinkfield.lua
+++ b/scripts/titlescreen/fields/service/servicelinkfield.lua
@@ -10,10 +10,10 @@ local ServiceLinkField = {
 ---Create a new ServiceLinkField instance
 ---@param o? table # initial parameters
 ---@return ServiceLinkField
-function ServiceLinkField:new(o)
+function ServiceLinkField.new(o)
     o = o or {}
 
-    return CreateClass(self, o, ServiceField, LinkField)
+    return CreateInstance(ServiceLinkField, o, ServiceField, LinkField)
 end
 
 ---@param deltaTime number # frametime in seconds
diff --git a/scripts/titlescreen/fields/service/updatefield.lua b/scripts/titlescreen/fields/service/updatefield.lua
index 530faf8..5564c4b 100644
--- a/scripts/titlescreen/fields/service/updatefield.lua
+++ b/scripts/titlescreen/fields/service/updatefield.lua
@@ -15,12 +15,12 @@ local UpdateField = {
 ---Create a new UpdateField instance
 ---@param o? table # initial parameters
 ---@return UpdateField
-function UpdateField:new(o)
+function UpdateField.new(o)
     o = o or {}
 
     o._timer = 0
 
-    return CreateClass(self, o, ServiceField)
+    return CreateInstance(UpdateField, o, ServiceField)
 end
 
 ---@param obj? any # message object for the field
diff --git a/scripts/titlescreen/pages/boot/bootpage.lua b/scripts/titlescreen/pages/boot/bootpage.lua
index 5634930..770e3f0 100644
--- a/scripts/titlescreen/pages/boot/bootpage.lua
+++ b/scripts/titlescreen/pages/boot/bootpage.lua
@@ -16,18 +16,18 @@ local BootPage = {
 ---Create a new BootPage instance
 ---@param o? table # initial parameters
 ---@return BootPage
-function BootPage:new(o)
+function BootPage.new(o)
     o = o or {}
 
-    local this = CreateClass(self, o, Page)
+    local this = CreateInstance(BootPage, o, Page)
 
     this._networkResult = {}
 
-    this:addField(ServiceField:new{posX = 32, posY = 32, label = Version.getLongVersion(), value = ""})
-    this:addField(ServiceField:new{posX = 64, posY = 64, label = "UNNAMED SDVX CLONE STARTUP...", value = ""})
+    this:addField(ServiceField.new{posX = 32, posY = 32, label = Version.getLongVersion(), value = ""})
+    this:addField(ServiceField.new{posX = 64, posY = 64, label = "UNNAMED SDVX CLONE STARTUP...", value = ""})
 
     local valueOffX = 220
-    this._mainIoTestField = SelfTestField:new{label = "MAIN I/O", VALUE_OFFSETX = valueOffX}
+    this._mainIoTestField = SelfTestField.new{label = "MAIN I/O", VALUE_OFFSETX = valueOffX}
     this._mainIoTestField.checkTask = function(obj)
         return SelfTestStatusEnum.OK
     end
@@ -37,7 +37,7 @@ function BootPage:new(o)
         end
     end
 
-    this._skinConfigTestField = SelfTestField:new{label = "SKIN CONFIG", VALUE_OFFSETX = valueOffX}
+    this._skinConfigTestField = SelfTestField.new{label = "SKIN CONFIG", VALUE_OFFSETX = valueOffX}
     this._skinConfigTestField.checkTask = function(obj)
         local crewpath = "skins/" .. game.GetSkin() .. "/textures/crew/anim/" .. game.GetSkinSetting("single_idol")
         if not IsDir(crewpath) then
@@ -51,7 +51,7 @@ function BootPage:new(o)
         end
     end
 
-    this._networkTestField = SelfTestField:new{label = "NETWORK", VALUE_OFFSETX = valueOffX}
+    this._networkTestField = SelfTestField.new{label = "NETWORK", VALUE_OFFSETX = valueOffX}
     -- set up async network check
     this._networkTestField.checkTask = function(obj)
         local status = SelfTestStatusEnum.INPROGRESS
@@ -77,12 +77,12 @@ function BootPage:new(o)
             IR.Heartbeat(function(res) this._networkResult = res end) -- IR doesn't like being called in a coroutine
         elseif status == SelfTestStatusEnum.PASS or status == SelfTestStatusEnum.OK then
             if this.viewHandler then
-                this.viewHandler:navigate(CheckUpdatePage:new())
+                this.viewHandler:navigate(CheckUpdatePage.new())
             end
         end
     end
 
-    local list = ListField:new{posX = 64, posY = 96}
+    local list = ListField.new{posX = 64, posY = 96}
     list:addField(this._mainIoTestField)
     list:addField(this._skinConfigTestField)
     list:addField(this._networkTestField)
diff --git a/scripts/titlescreen/pages/boot/checkupdatepage.lua b/scripts/titlescreen/pages/boot/checkupdatepage.lua
index 620419f..a87fb3d 100644
--- a/scripts/titlescreen/pages/boot/checkupdatepage.lua
+++ b/scripts/titlescreen/pages/boot/checkupdatepage.lua
@@ -13,14 +13,14 @@ local CheckUpdatePage = {
 ---Create a new CheckUpdatePage instance
 ---@param o? table # initial parameters
 ---@return CheckUpdatePage
-function CheckUpdatePage:new(o)
-    local this = CreateClass(self, o, Page)
+function CheckUpdatePage.new(o)
+    local this = CreateInstance(CheckUpdatePage, o, Page)
 
     local width = DialogField.DEFAULT_WIDTH
     local height = DialogField.DEFAULT_HEIGHT
     local posX = (Dim.design.width - width) / 2
     local posY = (Dim.design.height - height) / 2
-    this._updateDialogField = DialogField:new{
+    this._updateDialogField = DialogField.new{
         posX = posX,
         posY = posY,
         aabbW = width,
@@ -54,16 +54,17 @@ function CheckUpdatePage:new(o)
             return true
         elseif button == game.BUTTON_STA then
             -- NOTE: this is a huge ass hack, please rethink
-            local pageview = this.viewHandler
             local MainMenuPage = require("titlescreen.pages.service.mainmenupage")
             local VersionInfoPage = require("titlescreen.pages.service.versioninfopage")
-            pageview:replace(MainMenuPage:new())
-            pageview:navigate(VersionInfoPage:new())
+            this.viewHandler:replace(MainMenuPage.new())
+            this.viewHandler:navigate(VersionInfoPage.new())
             return true
         end
+
+        return false
     end
 
-    this._checkUpdateField = CheckUpdateField:new{posX = 32, posY = 64, label = "update check"}
+    this._checkUpdateField = CheckUpdateField.new{posX = 32, posY = 64, label = "update check"}
     this._checkUpdateField.onUpdateAvailable = function(url, version)
         this:addField(this._updateDialogField)
         this._focusedField = this._updateDialogField
diff --git a/scripts/titlescreen/pages/service/colorcheckpage.lua b/scripts/titlescreen/pages/service/colorcheckpage.lua
index 1018bbc..5a3fdeb 100644
--- a/scripts/titlescreen/pages/service/colorcheckpage.lua
+++ b/scripts/titlescreen/pages/service/colorcheckpage.lua
@@ -21,7 +21,7 @@ local ColorCheckPage = {
 ---Create a new ColorCheckPage instance
 ---@param o? table # initial parameters
 ---@return ColorCheckPage
-function ColorCheckPage:new(o)
+function ColorCheckPage.new(o)
     o = o or {}
 
     o.title = o.title or "COLOR CHECK"
@@ -30,17 +30,17 @@ function ColorCheckPage:new(o)
         "BACK BUTTON = EXIT"
     }
 
-    local this = CreateClass(self, o, ServicePage)
+    local this = CreateInstance(ColorCheckPage, o, ServicePage)
 
-    local height = self.GRADIENT_SPACING
-    local list = ListField:new()
-    list:addField(ColorGradientField:new{label = "RED", value = {255, 0, 0, 255}, aabbH = height})
-    list:addField(ColorGradientField:new{label = "YELLOW", value = {255, 255, 0, 255}, aabbH = height})
-    list:addField(ColorGradientField:new{label = "GREEN", value = {0, 255, 0, 255}, aabbH = height})
-    list:addField(ColorGradientField:new{label = "CYAN", value = {0, 255, 255, 255}, aabbH = height})
-    list:addField(ColorGradientField:new{label = "BLUE", value = {0, 0, 255, 255}, aabbH = height})
-    list:addField(ColorGradientField:new{label = "MAGENTA", value = {255, 0, 255, 255}, aabbH = height})
-    list:addField(ColorGradientField:new{label = "WHITE", value = {255, 255, 255, 255}, aabbH = height})
+    local height = ColorCheckPage.GRADIENT_SPACING
+    local list = ListField.new()
+    list:addField(ColorGradientField.new{label = "RED", value = {255, 0, 0, 255}, aabbH = height})
+    list:addField(ColorGradientField.new{label = "YELLOW", value = {255, 255, 0, 255}, aabbH = height})
+    list:addField(ColorGradientField.new{label = "GREEN", value = {0, 255, 0, 255}, aabbH = height})
+    list:addField(ColorGradientField.new{label = "CYAN", value = {0, 255, 255, 255}, aabbH = height})
+    list:addField(ColorGradientField.new{label = "BLUE", value = {0, 0, 255, 255}, aabbH = height})
+    list:addField(ColorGradientField.new{label = "MAGENTA", value = {255, 0, 255, 255}, aabbH = height})
+    list:addField(ColorGradientField.new{label = "WHITE", value = {255, 255, 255, 255}, aabbH = height})
     list:refreshFields()
 
     this:addField(list)
diff --git a/scripts/titlescreen/pages/service/inputcheckpage.lua b/scripts/titlescreen/pages/service/inputcheckpage.lua
index acf25be..0606ccc 100644
--- a/scripts/titlescreen/pages/service/inputcheckpage.lua
+++ b/scripts/titlescreen/pages/service/inputcheckpage.lua
@@ -12,24 +12,24 @@ local InputCheckPage = {
 ---Create a new InputCheckPage instance
 ---@param o? table # initial parameters
 ---@return InputCheckPage
-function InputCheckPage:new(o)
+function InputCheckPage.new(o)
     o = o or {}
 
     o.title = o.title or "INPUT CHECK"
     o.footer = o.footer or "BACK BUTTON = EXIT"
 
-    local this = CreateClass(self, o, ServicePage)
+    local this = CreateInstance(InputCheckPage, o, ServicePage)
 
-    local list = ListField:new()
-    list:addField(InputButtonField:new{label="START BUTTON", button=game.BUTTON_STA})
-    list:addField(InputButtonField:new{label="A BUTTON", button=game.BUTTON_BTA})
-    list:addField(InputButtonField:new{label="B BUTTON", button=game.BUTTON_BTB})
-    list:addField(InputButtonField:new{label="C BUTTON", button=game.BUTTON_BTC})
-    list:addField(InputButtonField:new{label="D BUTTON", button=game.BUTTON_BTD})
-    list:addField(InputButtonField:new{label="FX L BUTTON", button=game.BUTTON_FXL})
-    list:addField(InputButtonField:new{label="FX R BUTTON", button=game.BUTTON_FXR})
-    list:addField(InputKnobField:new{label="ANALOG VOLUME L", knob=0})
-    list:addField(InputKnobField:new{label="ANALOG VOLUME R", knob=1})
+    local list = ListField.new()
+    list:addField(InputButtonField.new{label="START BUTTON", button=game.BUTTON_STA})
+    list:addField(InputButtonField.new{label="A BUTTON", button=game.BUTTON_BTA})
+    list:addField(InputButtonField.new{label="B BUTTON", button=game.BUTTON_BTB})
+    list:addField(InputButtonField.new{label="C BUTTON", button=game.BUTTON_BTC})
+    list:addField(InputButtonField.new{label="D BUTTON", button=game.BUTTON_BTD})
+    list:addField(InputButtonField.new{label="FX L BUTTON", button=game.BUTTON_FXL})
+    list:addField(InputButtonField.new{label="FX R BUTTON", button=game.BUTTON_FXR})
+    list:addField(InputKnobField.new{label="ANALOG VOLUME L", knob=0})
+    list:addField(InputKnobField.new{label="ANALOG VOLUME R", knob=1})
     list:refreshFields()
 
     this:addField(list)
diff --git a/scripts/titlescreen/pages/service/mainmenupage.lua b/scripts/titlescreen/pages/service/mainmenupage.lua
index 61aa6ff..2613a79 100644
--- a/scripts/titlescreen/pages/service/mainmenupage.lua
+++ b/scripts/titlescreen/pages/service/mainmenupage.lua
@@ -15,18 +15,18 @@ local MainMenuPage = {
 ---Create a new MainMenuPage instance
 ---@param o? table # initial parameters
 ---@return MainMenuPage
-function MainMenuPage:new(o)
+function MainMenuPage.new(o)
     o = o or {}
 
     o.title = o.title or "MAIN MENU"
 
-    local this = CreateClass(self, o, ServicePage)
+    local this = CreateInstance(MainMenuPage, o, ServicePage)
 
-    local list = ListField:new()
-    list:addField(ServiceLinkField:new{label = "INPUT CHECK", link = InputCheckPage:new()})
-    list:addField(ServiceLinkField:new{label = "SCREEN CHECK", link = ScreenCheckPage:new()})
-    list:addField(ServiceLinkField:new{label = "COLOR CHECK", link = ColorCheckPage:new()})
-    list:addField(ServiceLinkField:new{label = "VERSION INFORMATION", link = VersionInfoPage:new()})
+    local list = ListField.new()
+    list:addField(ServiceLinkField.new{label = "INPUT CHECK", link = InputCheckPage.new()})
+    list:addField(ServiceLinkField.new{label = "SCREEN CHECK", link = ScreenCheckPage.new()})
+    list:addField(ServiceLinkField.new{label = "COLOR CHECK", link = ColorCheckPage.new()})
+    list:addField(ServiceLinkField.new{label = "VERSION INFORMATION", link = VersionInfoPage.new()})
     list:refreshFields()
 
     this:addField(list)
diff --git a/scripts/titlescreen/pages/service/screencheckpage.lua b/scripts/titlescreen/pages/service/screencheckpage.lua
index b70ef71..12f3806 100644
--- a/scripts/titlescreen/pages/service/screencheckpage.lua
+++ b/scripts/titlescreen/pages/service/screencheckpage.lua
@@ -19,7 +19,7 @@ local ScreenCheckPage = {
 ---Create a new ScreenCheckPage instance
 ---@param o? table # initial parameters
 ---@return ScreenCheckPage
-function ScreenCheckPage:new(o)
+function ScreenCheckPage.new(o)
     o = o or {}
 
     o.title = o.title or "SCREEN CHECK"
@@ -28,7 +28,7 @@ function ScreenCheckPage:new(o)
         "BACK BUTTON = EXIT"
     }
 
-    return CreateClass(self, o, ServicePage)
+    return CreateInstance(ScreenCheckPage, o, ServicePage)
 end
 
 ---@param button integer # options are under the `game` table prefixed with `BUTTON`
diff --git a/scripts/titlescreen/pages/service/servicepage.lua b/scripts/titlescreen/pages/service/servicepage.lua
index 1dbf4f4..753dc65 100644
--- a/scripts/titlescreen/pages/service/servicepage.lua
+++ b/scripts/titlescreen/pages/service/servicepage.lua
@@ -36,14 +36,14 @@ local ServicePage = {
 ---Create a new ServicePage instance
 ---@param o? table # initial parameters
 ---@return ServicePage
-function ServicePage:new(o)
+function ServicePage.new(o)
     o = o or {}
 
     o.title = o.title or ""
     o.selectedIndex = o.selectedIndex or 1
-    o.footer = o.footer or self.FOOTER
+    o.footer = o.footer or ServicePage.FOOTER
 
-    return CreateClass(self, o, Page)
+    return CreateInstance(ServicePage, o, Page)
 end
 
 ---Refresh content values
diff --git a/scripts/titlescreen/pages/service/versioninfopage.lua b/scripts/titlescreen/pages/service/versioninfopage.lua
index e1abe98..4aa9ef2 100644
--- a/scripts/titlescreen/pages/service/versioninfopage.lua
+++ b/scripts/titlescreen/pages/service/versioninfopage.lua
@@ -20,7 +20,7 @@ local VersionInfoPage = {
 ---Create a new VersionInfoPage instance
 ---@param o? table # initial parameters
 ---@return VersionInfoPage
-function VersionInfoPage:new(o)
+function VersionInfoPage.new(o)
     o = o or {}
 
     o.title = o.title or "SYSTEM INFORMATION"
@@ -30,19 +30,19 @@ function VersionInfoPage:new(o)
     }
     o.selectedIndex = o.selectedIndex or 1
 
-    local this = CreateClass(self, o, ServicePage)
+    local this = CreateInstance(VersionInfoPage, o, ServicePage)
 
     local logStr = ReadGameFile("log_usc-game.exe.txt") or ReadGameFile("log_usc-game.txt")
 
-    local list = ListField:new{selectedIndex = 2, locked = true}
-    list:addField(ServiceField:new{label = "SKIN ID CODE", value = Version.getLongVersion(), MARGIN = {0, 0, 0, 24}})
-    list:addField(UpdateField:new{label = "USC VERSION", value = getGameLogValue("Version", logStr)})
-    list:addField(ServiceField:new{label = "USC BRANCH", value = GameConfig["UpdateChannel"]})
-    list:addField(ServiceField:new{label = "USC GIT COMMIT", value = getGameLogValue("Git commit", logStr), MARGIN = {0, 0, 0, 24}})
-    list:addField(ServiceField:new{label = "GL VERSION", value = getGameLogValue("OpenGL Version", logStr)})
-    list:addField(ServiceField:new{label = "GLSL VERSION", value = getGameLogValue("OpenGL Shading Language Version", logStr)})
-    list:addField(ServiceField:new{label = "GL RENDERER", value = getGameLogValue("OpenGL Renderer", logStr)})
-    list:addField(ServiceField:new{label = "GL VENDOR", value = getGameLogValue("OpenGL Vendor", logStr)})
+    local list = ListField.new{selectedIndex = 2, locked = true}
+    list:addField(ServiceField.new{label = "SKIN ID CODE", value = Version.getLongVersion(), MARGIN = {0, 0, 0, 24}})
+    list:addField(UpdateField.new{label = "USC VERSION", value = getGameLogValue("Version", logStr)})
+    list:addField(ServiceField.new{label = "USC BRANCH", value = GameConfig["UpdateChannel"]})
+    list:addField(ServiceField.new{label = "USC GIT COMMIT", value = getGameLogValue("Git commit", logStr), MARGIN = {0, 0, 0, 24}})
+    list:addField(ServiceField.new{label = "GL VERSION", value = getGameLogValue("OpenGL Version", logStr)})
+    list:addField(ServiceField.new{label = "GLSL VERSION", value = getGameLogValue("OpenGL Shading Language Version", logStr)})
+    list:addField(ServiceField.new{label = "GL RENDERER", value = getGameLogValue("OpenGL Renderer", logStr)})
+    list:addField(ServiceField.new{label = "GL VENDOR", value = getGameLogValue("OpenGL Vendor", logStr)})
     list:refreshFields()
 
     this:addField(list)
diff --git a/scripts/titlescreen/service.lua b/scripts/titlescreen/service.lua
index 9b4e235..074869f 100644
--- a/scripts/titlescreen/service.lua
+++ b/scripts/titlescreen/service.lua
@@ -30,12 +30,12 @@ local rootMenu = {
 
 ]]
 
-local currentpage = MainMenuPage:new()
+local currentpage = MainMenuPage.new()
 
-local pageview = PageView:new(currentpage)
+local pageview = PageView.new(currentpage)
 
 local function reset()
-    pageview = PageView:new(currentpage)
+    pageview = PageView.new(currentpage)
 end
 
 local function render(deltaTime)