http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
public final class org.apache.fop.pdf.StandardStructureTypes$Illustration
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.fop.pdf.StandardStructureTypes$Illustration
  super_class: java.lang.Object
{
  public static final org.apache.fop.pdf.StructureType FIGURE;
    descriptor: Lorg/apache/fop/pdf/StructureType;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final org.apache.fop.pdf.StructureType FORMULA;
    descriptor: Lorg/apache/fop/pdf/StructureType;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final org.apache.fop.pdf.StructureType FORM;
    descriptor: Lorg/apache/fop/pdf/StructureType;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 96
            new org.apache.fop.pdf.StandardStructureTypes$StructureTypeImpl
            dup
            ldc "Figure"
            invokespecial org.apache.fop.pdf.StandardStructureTypes$StructureTypeImpl.<init>:(Ljava/lang/String;)V
            putstatic org.apache.fop.pdf.StandardStructureTypes$Illustration.FIGURE:Lorg/apache/fop/pdf/StructureType;
         1: .line 97
            new org.apache.fop.pdf.StandardStructureTypes$StructureTypeImpl
            dup
            ldc "Formula"
            invokespecial org.apache.fop.pdf.StandardStructureTypes$StructureTypeImpl.<init>:(Ljava/lang/String;)V
            putstatic org.apache.fop.pdf.StandardStructureTypes$Illustration.FORMULA:Lorg/apache/fop/pdf/StructureType;
         2: .line 98
            new org.apache.fop.pdf.StandardStructureTypes$StructureTypeImpl
            dup
            ldc "Form"
            invokespecial org.apache.fop.pdf.StandardStructureTypes$StructureTypeImpl.<init>:(Ljava/lang/String;)V
            putstatic org.apache.fop.pdf.StandardStructureTypes$Illustration.FORM:Lorg/apache/fop/pdf/StructureType;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.pdf.StandardStructureTypes$Illustration this
         0: .line 95
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.apache.fop.pdf.StandardStructureTypes$Illustration this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/pdf/StandardStructureTypes$Illustration;
}
SourceFile: "StandardStructureTypes.java"
NestHost: org.apache.fop.pdf.StandardStructureTypes
InnerClasses:
  public final Illustration = org.apache.fop.pdf.StandardStructureTypes$Illustration of org.apache.fop.pdf.StandardStructureTypes
  private StructureTypeImpl = org.apache.fop.pdf.StandardStructureTypes$StructureTypeImpl of org.apache.fop.pdf.StandardStructureTypes