For the high speed typing practice session, the spare paper is dog-eared to make it easier for Lucille Ball to pick up.
In the office, the door at the left that is usually a closet, now allows Kim, Lucy and Joe to pass through to the outside hallway. Similarly, the door on the right, sometimes a bathroom, is here called 'the storage room.' The exits are used as per the requirements of the plot without regards to prior episodes.