selenium - What is the purpose of specifying a schema in a web xml? -


data type definition (dtd) , xml schema definition (xsd) - these 2 type of specifying schema in web xml. purpose of specifying exactly?

i have specified in testng.xml file 

<!doctype suite system "http://testng.org/testng-1.0.dtd" >

what purpose of testng-1.0.dtd here?

i got information here on dtd don't understand purpose of adding in xml file? http://testng.org/testng-1.0.dtd.php

any in explaining appreciated. building test automation framework using selenium webdriver , using in testng.xml file

for 1 of basic use when using ide code complete feature dtd complete code.

i.e.

if using tag not sure of spelling or atributes can rite < , press ctrl+space bar , find code complete.

its kind of xmldoc , counterpart of javadoc


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