Find the `supported.languages` property (around line 202) and ensure your language code is included:

```properties
supported.languages=ar,bg,bn,ca,ckb_IQ,cs,da,de,el,en_IE,en,es,et,eu,fa,fi,fr,gl,gu,he,hi,hr,hu,hy,id,it,ja,ko,lt,lv,mk,ml,nl,no,pa,pl,pt_BR,pt,ro,ru,si,sq,sv,ta,te,th,tl,tr,uk,ur,vi,zh_CN,zh_TW,zh
```

**Optional configurations:**

If you create online help documentation:
```properties

et=et\n\
eu=eu\n\
fa=fa\n\
fi=fi\n\
fr=fr\n\
gl=gl\n\
gu=gu\n\
he=he\n\
hi=hi\n\
hr=hr\n\
hu=hu\n\
hy=hy\n\
id=id\n\
it=it\n\
ja=ja\n\
ko=ko\n\
lt=lt\n\
lv=lv\n\
mk=mk\n\
ml=ml\n\
nl=nl\n\
no=no\n\
pa=pa\n\
pl=pl\n\
pt=pt\n\
pt-br=pt-br\n\
pt_BR=pt-br\n\
ro=ro\n\
ru=ru\n\
si=si\n\
sq=sq\n\
sv=sv\n\
ta=ta\n\
te=te\n\
th=th\n\

     * hi=hi<br>
     * hr=hr<br>
     * hu=hu<br>
     * hy=hy<br>
     * id=id<br>
     * it=it<br>
     * ja=ja<br>
     * ko=ko<br>
     * lt=lt<br>
     * lv=lv<br>
     * mk=mk<br>
     * ml=ml<br>
     * nl=nl<br>
     * no=no<br>
     * pa=pa<br>
     * pl=pl<br>
     * pt=pt<br>
     * pt-br=pt-br<br>
     * pt_BR=pt-br<br>
     * ro=ro<br>
     * ru=ru<br>

ruarua",ss:"%d h\u0113kona",m:"he meneti",mm:"%d meneti",h:"te haora",hh:"%d haora",d:"he ra",dd:"%d ra",M:"he marama",MM:"%d marama",y:"he tau",yy:"%d tau"},dayOfMonthOrdinalParse:/\d{1,2}\xba/,ordinal:"%d\xba",week:{dow:1,doy:4}}),M.defineLocale("mk",{months:"\u0458\u0430\u043d\u0443\u0430\u0440\u0438_\u0444\u0435\u0432\u0440\u0443\u0430\u0440\u0438_\u043c\u0430\u0440\u0442_\u0430\u043f\u0440\u0438\u043b_\u043c\u0430\u0458_\u0458\u0443\u043d\u0438_\u0458\u0443\u043b\u0438_\u0430\u0432\u0433\u0...