ByteArrayOutputStream baos = new ByteArrayOutputStream();
PdbOutputStream out = new PdbOutputStream(baos);
new Text(number + ". ", "ISO-8859-1").write(out);
out.writeByte(0);
new Margin(margin, 0).write(out);
out.close();
content = baos.toByteArray();
} catch (IOException e) {
// Should not occur
throw new RuntimeException(e);