[kezekiel]

Ishak also said all government and private offices must instal business signs in Arabic-style script.

HUH?!?!?! SAY WHAT?!

[Salman]

Ishak also said all government and private offices must instal business signs in Arabic-style script.

HUH?!?!?! SAY WHAT?!

"Bahasa Indonesia" is the official language of Indonesia, sort of an Indonesian Esperanto. It is usually written in the Roman alphabet (like English), but can also be written with a modified form of the Arabic alphabet.

In the rest of Indonesia, it's strictly a matter of personal choice, though the government uses the Roman alphabet officially.