The symbol to repeat the previous measure is a diagonal slash with a dot on either side, and that symbol is in the staff. The word SIMILE means 'in a similar style. So, if you get a measure of staccato notes, or legato or slurred, an octave higher or lower or perhaps popped or snapped etc, continue playing IN THAT STYLE for at least the rest of the phrase, or until otherwise noted. The term 'loco' is sometimes used to negate the 'simile' marking.
You'll not run into this very often. If you're playing shows, you'll see it now and again. It's an older term that is used less these days and really doesn't come into play unless you're in a musical setting that has a lot of subtle style changes.