What do the errors mean?

Possible use of vmodl name
In description text a word matched a VMODL name or had a '.' in it.
Possible un-linked wsdl name
In description text a word matched a WSDL name and was not a link.
Item: <package.ClassName> is undocumented
There is no general description for a type
Enum value: <package.EnumName.value> is undocumented
An enum value is not documented
Property: <package.ClassName..property> is undocumented
A property is undocumented
<package.ClassName.method()> @task is undocumented
The method returns a Task and the details about the task are not documented.
Method: <package.ClassName.method()>, Parameter <parameterName> is undocumented
A parameter of the method is not documented
<package.ClassName.method()> return is undocumented
The return value for the method is not documented
<package.ClassName.method()>, Fault: <package.ClassName> is undocumented
A fault that the method throws is not documented
<package.ClassName> Link (@see): <SomeText> not found
A @see link is broken
<package.ClassName> Link {@link}: <SomeText> not found
A @link is broken
Possible unused javadoc tag: '@see'
The text '@see' is output instead of a link
Possible unused javadoc tag: '@link'
The text '@link' is output instead of a link
<package.ClassName.method()>, unused exception "<ExceptionName>" documentation
This could mean four things: