clear( clearMeta ) {
    clearMeta = ((clearMeta === undefined) && true) || clearMeta;
    if (clearMeta) { delete this.imp; }
    delete this.computed; // Don't use Object.keys() here
    delete this.employment;
    delete this.service;
    delete this.education;
    delete this.recognition;
    delete this.reading;
    delete this.writing;
    delete this.interests;
    delete this.skills;
    return delete this.social;
  }
Reset the sheet to an empty state. TODO: refactor/review