Rpg Xml

Hello, in my mission, I have an external DTD and I need the correct syntax for some of my XML file that looks like this:

<Players>
> Position = "Centers" <Player PPG="21.2" Lionel RPG="11.1"> Diggs <Player /
> Position = "Forward" <Player PPG="18.9" RPG="8.4"> <Case Andrew Player /
Position = "Forward" <Player PPG="14.4" RPG="5.0"> Casey Lewis <> Player /
> Position = "Guard" <Player PPG="15.4" RPG="3.1" Assists="9.4"> <Case Andrew Player /
> Position = "Guard" <Player PPG="7.2" RPG="2.5" Assists="3.9"> <Kee Ray Player /
</> Players

My DTD syntax is as follows:
<! ELEMENT Players (Player +)>

<! Player ELEMENT (# PCDATA)>
<! ATTLIST player's position (center | Forward | Guard) CDATA # REQUIRED>
<! ATTLIST CDATA # IMPLIED PPG Player>
<! ATTLIST CDATA # IMPLIED Player RPG>
<! ATTLIST CDATA # IMPLIED Player Help>

but it keeps telling me

Open quote is expected for attribute "position" associated with an element type "Player".


Can someone help me??

You have an error in a couple:

1. The first player who has a position of "centers" that is not one of the valid positions that you specify in the DTD. s Try to remove ".

2. In the position ATTLIST delete CDATA.

3. In ATTLIST position you misspelled heading.