default namespace = ""
namespace a = "http://relaxng.org/ns/compatibility/annotations/1.0"
namespace ns_1 = "http://relaxng.org/ns/compatibility/annotations/1.0"
namespace rng = "http://relaxng.org/ns/structure/1.0"

start |= starting_Solution
starting_Solution =
  element Solution {
    (element Configurations { Configurations }?
     | element Project { Project }*
     | element Folder { Folder }*
     | PropertiesGroup*)*,
    attribute Description { xsd:string }?,
    attribute Version { xsd:string }?
  }
Configurations =
  (element BuildType {
     attribute Name { xsd:string }
   }*
   | element Platform {
       attribute Name { xsd:string }
     }*
   | element ProjectType { ProjectType }*)*
ProjectType =
  (ConfigurationRulesGroup*)*,
  attribute TypeId { xsd:string }?,
  attribute Name { xsd:string }?,
  attribute Extension { xsd:string }?,
  attribute BasedOn { xsd:string }?,
  [ ns_1:defaultValue = "true" ] attribute IsBuildable { xsd:boolean }?,
  [ ns_1:defaultValue = "true" ]
  attribute SupportsPlatform { xsd:boolean }?
Folder =
  (element File {
     attribute Path { xsd:string }
   }*
   | element Project { Project }*
   | PropertiesGroup*)*,
  attribute Name { xsd:string }
Project =
  (element BuildDependency {
     attribute Project { text }
   }*
   | ConfigurationRulesGroup*
   | PropertiesGroup*)*,
  attribute Path { xsd:string },
  attribute Type { xsd:string }?,
  attribute DisplayName { xsd:string }?
PropertiesGroup =
  element Properties {
    element Property {
      attribute Name { xsd:string },
      attribute Value { xsd:string }?
    }*,
    attribute Name { text },
    attribute Scope { text }?
  }
ConfigurationRulesGroup =
  element BuildType {
    attribute Solution { xsd:string }?,
    attribute Project { xsd:string }?
  }+
  | element Platform {
      attribute Solution { xsd:string }?,
      attribute Project { xsd:string }
    }+
  | element Build {
      attribute Solution { xsd:string }?,
      attribute Project { xsd:string }?
    }+
  | element Deploy {
      attribute Solution { xsd:string }?,
      attribute Project { xsd:string }?
    }+
