I Filename req.xml and req.dtd
Specifies the the behaviour of the node during its execution

1.Request Pattern	
	This is the root tag in the XML document.
	
2.Request
	This tag encapsulates the different types of requests a node 
	can make. (i.e. FileRequest, UpRequest, DownRequest).
	
3. FileRequest
	This is a request that requests a set of files.

3a. Time.
	All requests have a TIME tag that is the Time to make the req.

3b. DestFolder
	The folder into which the response to a certain request is to be put so that we can varify it.
	You cannot read anything from this folder. It does not count towards your disk capacity. It will 
	only be used by us to varify that a request has been properly satisfied. 
	
3c. NoOfFiles
	The Number of files to read. Can be 1 to many

3d. File
	this encapsulates the type of File Request


	3d1. FileName
		Name of file to process
	3d2. Size
		No of bytes to process
	3d3. Type of access
		Read, write, execute, create, delete, seek.
	NOTE: incase of create and delete execute Size is not specified. 

4. DownRequest
	Request to pull a node down
	
	4a. Time 
		Time to do so

5 UpRequest
	Request to bring a node up	
	4a. Time 
		Time to do so
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II Filename init.xml and initial.dtd
Specifies the inital configuration of a particular node of a given user

1.User
	the root tag for this document
	
2. Node
	encapsulates the node information. The user will have atleast 
	1 node
	
2a. Node Id
	The unique ID of a given node

2b. Capacity
	The number of bytes that a node can hold. This is the total number of bytes that a node can hold 
	throughout the operation

2c. NoOfFilesPresent
	The number of files currently on the node. this has to be less than capacity

2d. File
	This encapsulates the File information of files currently present on the node.Can be zero to 
	many

	2d1. FileName
		Name of file
		
	2d2. Filesize
		Size of file
	
	2d3. AccessRights
		Encapsulates the rights associated with a file
		ie read write execute for owner, group, and rest
		these will be specified as 1 or 0 just as in UNIX
		
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NOTE::: the files in the destFolder do not contribute to the files that make up the capacity. However 
this folder is only for stroing responses to requests.

System behaviour

1.Each node belonging to a single user will be given a copy of file type II(i.e. init.xml initial.dtd). 
The node will be setup according to the specification in the file. 

2.Eachnode will be given a different file I(i.e. req.xml and req.dtd) and will perform perform the 
operations specified. 

3. The node will output the cost incurred and which request could be specifed and which couldnt.