Limits or Limiters are values you can apply to your search to reduce the number of results and refine the focus of your search. Limits would typically include the year of publication, for example limiting your search to a date range i.e. 2010- 2021. Limits might also address the subjects of journal articles, for example find journal articles concerning people over the age of 65 and the type of publication, for example find peer reviewed journal article only. Specialist databases such as MEDLINE and CINAHL have sets of limits that are appropriate to the subjects they cover. Generally, you can apply Limits to your search, remove them, or change them without having to rerun your search.