DFdou's Blog Life is short,Be yourself.

• the_author
• the_author_description
• the_author_login
• the_author_firstname
• the_author_lastname
• the_author_nickname
• the_author_ID
• the_author_email
• the_author_url
• the_author_link (Version 2.1)
• the_author_icq (Deprecated)
• the_author_aim
• the_author_yim
• the_author_msn (Deprecated)
• the_author_posts
• the_author_posts_link
• the_modified_author (Version 2.8)
• list_authors (Deprecated)
• wp_list_authors

• the_category
• the_category_rss
• the_category_ID (Deprecated)
• the_category_head (Deprecated)
• single_cat_title
• category_nicename
• category_description
• wp_dropdown_categories (Version 2.1)
• dropdown_cats (Deprecated in 2.1)
• wp_list_categories (Version 2.1)
• list_cats (Deprecated in 2.1)
• wp_list_cats (Deprecated in 2.1)
• in_category
• get_category_parents
• get_the_category
• get_category_link

• the_time
• the_date
• the_date_xml
• the_weekday (Deprecated)
• the_weekday_date (Deprecated)
• the_modified_time
• the_modified_date (Version 2.1)
• single_month_title
• get_the_time (Version 1.5)
• get_day_link
• get_month_link
• get_year_link
• get_calendar

• the_tags (Version 2.3)

• get_the_tags (Version 2.3)
• get_the_tag_list (Version 2.3)
• single_tag_title (Version 2.3)
• get_tag_link
• wp_tag_cloud (Version 2.3)
• wp_generate_tag_cloud

• edit_post_link
• edit_comment_link
• wp_link_pages
• link_pages (Deprecated in 2.1)
• previous_posts_link
• next_posts_link
• previous_comments_link (Version 2.7)
• next_comments_link (Version 2.7)
• paginate_comments_links (Version 2.7)

• wp_list_bookmarks (Version 2.1)
• get_bookmarks (Version 2.1)

While in The Loop, these values can be accessed through the $post object.

• the_ID
• the_title
• the_title_attribute (Version 2.3)
• single_post_title
• the_title_rss
• the_content
• the_content_rss
• the_excerpt
• the_excerpt_rss
• next_post_link
• previous_post_link
• next_posts_link
• previous_posts_link
• posts_nav_link
• sticky_class (Version 2.7)
• the_meta
• the_tags (Version 2.3)

• comments_number
• comments_link
• comments_rss_link
• comments_popup_script
• comments_popup_link
• comment_ID
• comment_author
• comment_author_IP
• comment_author_email
• comment_author_url
• comment_author_email_link
• comment_author_url_link
• comment_author_link
• comment_type
• comment_text
• comment_excerpt
• comment_date
• comment_time
• comment_author_rss
• comment_text_rss
• comment_link_rss
• permalink_comments_rss
• wp_list_comments (Version 2.7)
• comment_reply_link (Version 2.7)
• cancel_comment_reply_link (Version 2.7)
• comment_form_title (Version 2.7)
• comment_id_fields (Version 2.7)

• permalink_anchor
• get_permalink
• the_permalink
• permalink_single_rss

• trackback_url
• trackback_rdf

• bloginfo

• bloginfo_rss
• get_bloginfo
• get_bloginfo_rss
• wp_title
• wp_get_archives
• get_archives (Deprecated in 2.1)
• get_calendar
• get_posts
• wp_list_pages
• wp_page_menu (Version 2.7)
• wp_dropdown_pages
• wp_loginout
• wp_register
• wp_logout_url (Version 2.7)
• query_posts
• rss_enclosure
• the_search_query

Geo features were moved to a plugin implementation with WordPress 1.5. Tags in parentheses are the plugin version.

• print_Lat (the_Lat)

• print_Lon (the_Lon)
• print_UrlPopNav (the_UrlPopNav)
• print_AcmeMap_Url (the_AcmeMap_Url)
• print_GeoURL_Url (the_GeoURL_Url)
• print_GeoCache_Url (the_GeoCache_Url)
• print_MapQuest_Url (the_MapQuest_Url)
• print_SideBit_Url (the_SideBit_Url)
• print_DegreeConfluence_Url (the_DegreeConfluence_Url)
• print_TopoZone_Url (the_TopoZone_Url)
• print_FindU_Url (the_FindU_Url)
• print_MapTech_Url (the_MapTech_Url)