Found via `codespell -q 3 -S *.ts,thirdparty,./toonz/sources/common/twain -L appy,ba,chunck,datas,forse,inbetween,inly,inout,ket,pevent,possibile,siz,strack,upto,vertexes`
- using std::string;
- using std::wstring;
- using std::ostream;
- using std::istream;
- using std::iostream;
- using std::ostrstream;
- using std::istrstream;
- using std::fstream;