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Holding the 'Crtl' key while clicking will allow you to select multiple items from the same list.

The Artist filterFilters are used to strip out unwanted elements from content before they are displayed, alter the entered data in some way (such closing HTML tags as necessary), or increase the functionality of entered data (such as the automagic linking of glossary terms). will offer suggestions as you type. Please note that not all members are Contributing Members and not all Contributing Members produce visual art.

For Example:If you would like to see all the submitted images that reflect the horror genre in the comic bookA book is a set of pages that are tied together in a hierarchal structure.  Part of Drupal's core functionality, books are a great way to organize data into an easily navigable structure.  Books may be used for all sorts of purposes, from reference manuals to long works of fiction. style by a contributor named Foobar, you would hold 'Ctrl' and click on Horror and Comic in the Genre filter, enter Foobar into the Artist filter, and finally hold 'Ctrl' while selecting both SFW and NSFW from the Mature Content filter. Once your desired filters are set, simply press the button labeled "Apply".

If you use the filters and suddenly there is nothing here, try using less restrictive terms.