6.8 Parsed and Unparsed Entities


parsed	<!ENTITY name external-id>
	<!ENTITY % name external-id>

unparsed	<!ENTITY name external-id NDATA notation-declaration >
	<!ENTITY % name external-id NDATA notation-declaration >

<!NOTATION gif PUBLIC
  "-//CompuServe//NOTATION Graphics Interchange Format 89a//EN" >
<!ELEMENT get #EMPTY>
<!ATTLIST get obj  ENTITY #IMPLIED >
<!ENTITY  pict SYSTEM "fig.gif" NDATA gif >
<!ENTITY  text SYSTEM "import.xml" >

fig.gif:
00110101000...
import.xml:
...<...

The value of a parsed entity is passed by the parser to the application in a processed form.
The value of an unparsed entity is to be interpreted by the application without help from the parser. The parser passes the content through without processing.
The notation declaration indicates the format of the file or references a helper utility.

summary of entity types

general internal entities	XML macros
parameter internal entities	DTD macros
general external entities	XML imports
parameter external entities	DTD imports
unparsed entities	filtered XML/DTD imports

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