diff --git a/doc/features.md b/doc/features.md
index 0d79e7f..4d15937 100644
--- a/doc/features.md
+++ b/doc/features.md
@@ -22,13 +22,15 @@
 * RapidJSON should be fully RFC4627/ECMA-404 compliance.
 * Support JSON Pointer (RFC6901).
 * Support JSON Schema Draft v4.
+* Support Swagger v2 schema.
+* Support OpenAPI v3.0.x schema.
 * Support Unicode surrogate.
 * Support null character (`"\u0000"`)
- * For example, `["Hello\u0000World"]` can be parsed and handled gracefully. There is API for getting/setting lengths of string.
+* For example, `["Hello\u0000World"]` can be parsed and handled gracefully. There is API for getting/setting lengths of string.
 * Support optional relaxed syntax.
- * Single line (`// ...`) and multiple line (`/* ... */`) comments (`kParseCommentsFlag`). 
- * Trailing commas at the end of objects and arrays (`kParseTrailingCommasFlag`).
- * `NaN`, `Inf`, `Infinity`, `-Inf` and `-Infinity` as `double` values (`kParseNanAndInfFlag`)
+* Single line (`// ...`) and multiple line (`/* ... */`) comments (`kParseCommentsFlag`). 
+* Trailing commas at the end of objects and arrays (`kParseTrailingCommasFlag`).
+* `NaN`, `Inf`, `Infinity`, `-Inf` and `-Infinity` as `double` values (`kParseNanAndInfFlag`)
 * [NPM compliant](http://github.com/Tencent/rapidjson/blob/master/doc/npm.md).
 
 ## Unicode
diff --git a/doc/schema.md b/doc/schema.md
index 238d7a5..4da4474 100644
--- a/doc/schema.md
+++ b/doc/schema.md
@@ -24,7 +24,15 @@ if (sd.Parse(schemaJson).HasParseError()) {
     // the schema is not a valid JSON.
     // ...       
 }
+
 SchemaDocument schema(sd); // Compile a Document to SchemaDocument
+if (!schema.GetError().ObjectEmpty()) {
+    // there was a problem compiling the schema
+    StringBuffer sb;
+    Writer<StringBuffer> w(sb);
+    schema.GetError().Accept(w);
+    printf("Invalid schema: %s\n", sb.GetString());
+}
 // sd is no longer needed here.
 
 Document d;
diff --git a/include/rapidjson/schema.h b/include/rapidjson/schema.h
index 0e45df6..6e51177 100644
--- a/include/rapidjson/schema.h
+++ b/include/rapidjson/schema.h
@@ -1794,7 +1794,8 @@ public:
     virtual const SchemaDocumentType* GetRemoteDocument(const GenericUri<ValueType, AllocatorType> uri, Specification& spec) {
         // Default implementation just calls through for compatibility
         // Following line suppresses unused parameter warning
-        if (false) printf("GetRemoteDocument: %d %d\n", spec.draft, spec.oapi);
+        (void)spec;
+        // printf("GetRemoteDocument: %d %d\n", spec.draft, spec.oapi);
         return GetRemoteDocument(uri.GetBaseString(), uri.GetBaseStringLength());
     }
 };