Memorize and restore items by script?

Hi,

can one of the script gurus tell me how to execute a menu command by script? 

Epecially the [Edit]\[Object]\[Memorize]\[Memorize Selected Item(s)] and  [Edit]\[Object]\[Restore]\[Restore Selected Item(s)] commands?

I know how I select items by code, but now I need to memorize the selected ones.

Best regards

Stefan