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DTD - parameter entity

v ho
Greenhorn

Joined: Apr 05, 2011
Posts: 1
I am having trouble trying to implement parameter entities so that i can repeat text multiple times within the DTD.

example XML code:


The address, street, city, postcode elements both have the same information. How would i reuse these sets of elements multiple times within a DTD document using parameter entity ? i know the key syntax is the % sign, but i can't seem to understand how to code it properly.
g tsuji
Ranch Hand

Joined: Jan 18, 2011
Posts: 511
    
    3
This is how it would look like, making some assumptions on cardinality and content model.

with the external dtd (specifically using parameter entity):

You cannot use parameter entities inside an internal subset, though.
 
Consider Paul's rocket mass heater.
 
subject: DTD - parameter entity