IDE - unsupporeted command for frames and windows?

Here is the C# code exported from recorded test by selenium IDE 2.8 (latest). It seems to me that some commands are not supported such as selectFrame and SelectWindow. The system  rerun after recording sometimes behaves as expected but sometimes it fails. Are there other IDE  commands  to deal with frames and windows? Maybe  there might be otherway to solve this problem?  


driver.Navigate().GoToUrl(baseURL + "/testst/MyPage.aspx");
           
// ERROR: Caught exception [ERROR: Unsupported command [selectFrame | SideMainFrame | ]]
           
driver.FindElement(By.Id("MainMenuLink")).Click();
           
// ERROR: Caught exception [ERROR: Unsupported command [selectWindow | name=mainmenu | ]]
        
   driver.FindElement(By.LinkText("ListProducts")).Click();
 
The page tested based on Frame and frameset.


Thanks in advance

driver.switchTo().frame("frame");

driver.switchTo().window("window");