single.php , the_permalink , the_excerpt , add_filter

Lesson 9 begin : https://github.com/mike1477/wordpress-basic/tree/master/lesson-9 Lesson 9 end : https://github.com/mike1477/wordpress-basic/tree/master/lesson-10 Template List : https://codex.wordpress.org/Theme_Development#Template_Files_List Tags : https://codex.wordpress.org/Template_Tags#Link_tags Add Filter : https://developer.wordpress.org/reference/functions/add_filter/ Filter References : https://codex.wordpress.org/Plugin_API/Filter_Reference/#Advanced_WordPress_Filters