* removed ClearEnterMappedKeys from global functions
* typo fix in rawequal
* fix explanations of global SecondsToXXXX functions
* add to explanation of lua.ReportScriptError
* explain how ActorSound class can be used in Lua as "Sound"
* fix explanation for Course.GetCouseDir
* fix specified args for GAMESTATE.GetPreferredDifficulty
* remove HighScore.GetHighScore since it doesn't exist
* document special args for ScreenSelectProfile.SetProfileIndex
* fix specified args for Style.GetColumnInfo
* add examples of return value for Style.GetColumnInfo
* remove lingering mentions of SM4