Как "красиво" , удобочитаемо, наглядно показать приведенный Листинг

<?xml version="l.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="notebook" type="notebookType" /> 
<xsd:complexType name="notebookType">
<xsd:element name="person" type="personType" 
minOccurs="0" maxOccurs="unbounded" />
</xsd:complexType>
<xsd:complexType name="personType"> 
<xsd:sequence>
<xsd:element name="name">
<xsd:complexType>
<xsd:attribute name="first"  type="xsd:string"
use="optional" /> <xsd:attribute name="second" type="xsd:string"
use="optional" /> <xsd:attribute name="surname" type="xsd:string"
use="required" /> </xsd:complexType>
</xsd:element>
<xsd:element name="birthday" type="ruDate" minOccurs="0" />
<xsd:element name="address" type="addressType" minOccurs="0" maxOccurs="unbounded" />
<xsd:element name="phone-list" type="phone-listType" minOccurs="0" />
</xsd:sequence> </xsd:complexType>
<xsd:complexType name="addressType" > <xsd:sequence>
<xsd:element name="street" type="xsd:string" />
<xsd:element name="city"  type="cityType" />
<xsd:element name="zip"   type="xsd:positivelnteger" />
</xsd:sequence> </xsd:complexType>
<xsd:complexType name='cityType'>
<xsd:simpleContent>
<xsd:extension base='xsd:string' >
<xsd:attribute name='type' type='placeType'
default='город' /> </xsd:extension> </xsd:simpleContent>
</xsd:complexType> <xsd:simpleType name="placeType">
<xsd:restriction base = "xsd:string">
<xsd:enumeration value="ropofl" />
<xsd:enumeration value="nocenoK" />
<xsd:enumeration value="flepeBHH" /> </xsd:restriction>
</xsd:simpleType>
<xsd:complexType name="phone-listType">
<xsd:element name="work-phone" type="xsd:string"
minOccurs="0" maxOccurs="unbounded" /> <xsd:element name="home-phone" type="xsd:string"
minOccurs="0" maxOccurs="unbounded" />
</xsd:complexType> <xsd:simpleType name="ruDate">
<xsd:restriction base="xsd:string">
<xsd:pattern value="[0-9]{2}.[0-9]{2}.[0-9]{4}" /> </xsd:restriction>
</xsd:simpleType> </xsd:schema>