public String toString() {return "<field start='" + this.begin + "' end='" + this.end + "' field='"+ this.field + "' text='" + this.text + "'/>";}
public override string ToString(){return "<field start='" + this.m_begin + "' end='" + this.m_end + "' field='"+ this.m_field + "' text='" + this.m_text + "'/>";}