<?xml version="1.0"?>
<ErrorDocumentation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ErrorName>CS1537</ErrorName>
  <Examples>
    <string>// CS1537: The using alias `A' appeared previously in this namespace
// Line: 6
// Compiler options: -r:CSExternAlias-lib.dll

extern alias A;
using A = System;

</string>
    <string>// CS1537: The using alias `A' appeared previously in this namespace
// Line: 6
// Compiler options: -r:CSExternAlias-lib.dll

extern alias A;
extern alias A;

</string>
    <string>// CS1537: The using alias `A' appeared previously in this namespace
// Line: 7

using A = System;
using A = System;

</string>
  </Examples>
</ErrorDocumentation>