message: Spot the formal charge prefix
diff: @@ -29,12 +29,18 @@ export interface SdfFile {
  const delimiter = '$$$$';
  +const formalChargePrefix = 'M CHG';
  +
  function handleDataItems(tokenizer: Tokenizer): { dataHeader: Column<string>, data: Column<string> } {
  const dataHeader = TokenBuilder.create(tokenizer.data, 32);
  const data = TokenBuilder.create(tokenizer.data, 32);
  while (tokenizer.position < tokenizer.length) {
  const line = Tokenizer.readLine(tokenizer);
  + if (line.startsWith(formalChargePrefix)) {
  + console.log('charge found');
  + console.log(line);
  + }
  if (line.startsWith(delimiter)) break;
  if (!line) continue;
  