Please choose the correct ending to complete the given sentence: Work World: [header] How to use a manual typewriter [title] Slide the margin set on the right-hand side of the typewriter. [step] Before you start typing, you'll want to make sure that your margins are set correctly. The right-hand margin set is usually located next to the larger carriage release lever at the top right of the typewriter.

Ending1: [substeps] If you're typing to a computer and don't have the right-hand margin set, you can still specify the margins manually while writing. [title] Set the margins on the lower right as they indicate desired. Ending2: [substeps] Slide the margin set on the left-hand side of the typewriter away from the carriage release lever. A household typewriter may use this lever to move the carriage from side to side. Ending3: This indicates how you'll move your typewriter along its fine carriage. After setting up the margins, you may do an isolated margin set by turning the knobs on the right-hand wheels towards the opposite vertical carriage control. Ending4: The margin sets usually look like metal brackets at the very top of the typewriter. They may have a button you have to press before you can move them.

Answer format: ending1/ending2/ending3/ending4