Documentation for Chemical Markup Language (CML)
Definition Type: Attribute
Name: id
Namespace: http://www.xml-cml.org/schema
Type: nsA:idType
Containing Schema: schema.xsd
Use (Optional)
Documentation:
A unique ID for an element. Id is used for machine identification of elements and in general should not have application semantics. It is similar to the XML ID type as containing only alphanumerics, '_', ',' and '-' and and must start with an alphabetic character. Ids are case sensitive. Ids should be unique within local scope, thus all atoms within a molecule should have unique ids, but separated molecules within a document (such as a published article) might have identical ids. Software should be able to search local scope (e.g. all atoms within a molecule). However this is under constant review.
Collapse XSD Schema Diagram:
XSD Diagram of id in schema schema_xsd (Chemical Markup Language (CML))
Collapse XSD Schema Code: 
<xsd:attribute id="att.id" name="id" type="idType">
    <xsd:annotation>
        <xsd:documentation>
            <h:div class="summary" xmlns:h="http://www.w3.org/1999/xhtml">A unique ID for an element.</h:div>
            <h:div class="description" xmlns:h="http://www.w3.org/1999/xhtml">Id is used for machine identification of elements and
                in general should not have application semantics. It is similar to the XML ID type
                as containing only alphanumerics, '_', ',' and '-' and and must start with an
                alphabetic character. Ids are case sensitive. Ids should be unique within local scope,
                thus all atoms within a molecule should have unique ids, but separated molecules within a 
                document (such as a published article) might have identical ids. Software
                should be able to search local scope (e.g. all atoms within a molecule). 
                However this is under constant review.</h:div>
        </xsd:documentation>
    </xsd:annotation>
</xsd:attribute>
Collapse Derivation Tree:
Documentation for Chemical Markup Language (CML)

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