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[SYMBOL]
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]
[I]
[J]
[K]
[L]
[M]
[N]
[O]
[P]
[Q]
[R]
[S]
[T]
[U]
[V]
[W]
[X]
[Z]
& (ampersand) entities
2nd
3rd
in URLs
in XHTML
@ at symbol
[See at-rules] \\\\ (backslash), CSS2 escape characters and
object attribute (<applet>)
object model (HTML v4.0)
<object> tags
2nd
obsolete tags
[See deprecated tags] \: (colon) and pseudoclasses
, (comma) in styles
{ } (curly braces)
= (equals sign) for tag attributes
offset
[See alignment] <ol> tags
2nd
< (less-than sign)
<!-- --> tags
2nd
omitting HTML tags
onAbort attribute
2nd
onBlur attribute
onChange attribute
2nd
onClick attribute
2nd
onDblClick attribute
2nd
onError attribute
2nd
onFocus attribute
onKeyDown attribute
2nd
onKeyPress attribute
2nd
onKeyRelease attribute
onKeyUp attribute
onLoad attribute
2nd
3rd
onMouseDown attribute
2nd
onMouseMove attribute
2nd
onMouseOut attribute
2nd
3rd
onMouseOver attribute
2nd
3rd
4th
5th
onMouseUp attribute
2nd
onReset attribute
2nd
3rd
onSelect attribute
2nd
onSubmit attribute
2nd
3rd
onUnload attribute
2nd
% (percent sign) for character encoding
in URL encoding
+ (plus sign) in URL encoding
# (pound sign) for entities
for name anchors
in URLs
<optgroup> tags
<option> tags
? (question mark) in URLs
2nd
" (quotation mark) for attribute values
2nd
in URLs
ordered (numbered) lists
2nd
list marker style properties
nesting
numbering style
using appropriately
orphans
; (semicolon) in character entities
/ (slash) in ending tags
in URLs
2nd
[] (square brackets)
~ (tilde) in URLs
outset borders
overlining
overriding hyperlink targets
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