Slug is the URL of a page or a department and is usually auto created using the title of the page/department. The slug can be changed or shortened after being auto created, to create such things as novelty URLs. If do create a custom Slug please remember it should not contain any capital letters or special characters other than a hyphen -.
For example, on the following - https://www.fallhaven.org/boe/strategic-plan, the page which the URL points to has the slug strategic-plan, which can be found at the end of the URL. Since the page can be found inside the 'Board of Education' department, the department's slug boe is showing before the page's slug/URL.
Note: If the slug is edited for a page or department, after it has been linked to, any links will be broken and will need to be redone. If you do not know if the department or page has been linked to, you might want to create a redirect to the new URL.