CREATE TABLE table_name_79 (wysiwyg_editor VARCHAR(255), image_attachment VARCHAR(255), user_selectable_themes VARCHAR(255), unread_message_tracking VARCHAR(255))
Which WYSIWYG Editor has a User-selectable themes of yes, and an Unread message tracking of session, and an Image attachment of plugin?
    
SQL: SELECT wysiwyg_editor FROM table_name_79 WHERE user_selectable_themes = "yes" AND unread_message_tracking = "session" AND image_attachment = "plugin"