Notation-Notation Declaration
A notation indicates the processor of the type of object that is being referenced.
A notation declaration appears at the end of the entity declaration as:
<! ENTITY FIGURE SYSYEM "author1.gif " NDATA G IF>
If you try to run the above declaration, it will result in an error. The error
results because the entity is referencing a binary file type and the processor
has not been told what to do with the binary file. The notation must be declared
as a notation declaration. A notation declaration tells the processor what to
do with the specific binary file type and is done as follows:
<!NOTATION GIF SYSTEM "lexplore.exe">
The above declaration indicates to the processor that whenever it encounters
a GIF file in the DTD it should use the lexplore.exe program to process it.
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