Furthermore there is a circular letter from the directorate general of community education and special education on september 23, 2021, regarding the widespread use of bisindo in special education units for the deaf or deaf community in the wider community.
Salanturnyané surat edaran saking diréktorat jéndral pendidikan masyarakat miwah pendidikan khusus ring tanggal 23 septémber 2021, indik panganggén bisindo saking sagenah-genah satuan pendidikan khusus komunitas tuli ring wewidangan para kramané sareng sami.