A - anchor
ABBR - abbreviated form (e.g., WWW, HTTP, etc.)
ACRONYM
ADDRESS - information on author
APPLET - Java applet  
AREA - client-side image map area
B - bold text style
BASE - document base URI
BASEFONT - base font size  
BDO - I18N BiDi over-ride
BIG - large text style
BLOCKQUOTE - long quotation
BODY - document body
BR - forced line break
BUTTON - push button
CAPTION - table caption
CENTER - shorthand for DIV align=center  
CITE - citation
CODE - computer code fragment
COL - table column
COLGROUP - table column group
DD - definition description
DEL - deleted text
DFN - instance definition
DIR - directory list  
DIV - generic language/style container
DL - definition list
DT - definition term
EM - emphasis
FIELDSET - form control group
FONT - local change to font  
FORM - interactive form
FRAME - subwindow 
FRAMESET - window subdivision 
H1, H2, H3, H4, H5, H6 - heading
HEAD - document head
HR - horizontal rule
HTML - document root element
I - italic text style
IFRAME - inline subwindow 
IMG - Embedded image
INPUT - form control
INS - inserted text
ISINDEX - single line prompt  
KBD - text to be entered by the user
LABEL - form field label text
LEGEND - fieldset legend
LI - list item
LINK - a media-independent link
MAP - client-side image map
MENU - menu list  
META - generic metainformation
NOFRAMES - alternate content container for non
frame-based rendering 
NOSCRIPT - alternate content container for non
script-based rendering
OBJECT - generic embedded object
OL - ordered list
OPTGROUP - option group
OPTION - selectable choice
P - paragraph
PARAM - named property value
PRE - preformatted text
Q - short inline quotation
S - strike-through text style  
SAMP - sample program output, scripts, etc.
SCRIPT - script statements
SELECT - option selector
SMALL - small text style
SPAN - generic language/style container
STRIKE - strike-through text  
STRONG - strong emphasis
STYLE - style info
SUB - subscript
SUP - superscript
TABLE - starting tag for table
TBODY - table body
TD - table data cell
TEXTAREA - multi-line text field
TFOOT - table footer
TH - table header cell
THEAD - table header
TITLE - document title
TR - table row
TT - teletype or monospaced text style
U - underlined text style  
UL - unordered list
VAR - instance of a variable or program argument