Indonesia–Malaysia border crossings. Illegal immigrants are also known to use such crossings. There are numerous scheduled sea crossings between Indonesia and Malaysia, mostly between ports in the former's island of Sumatra and Peninsula Malaysia. Here is a list of ports (Indonesian port followed by the Malaysian port) where scheduled boat services operate as of April 2008: Sumatra-Peninsula Malaysia North Kalimantan-Sabah Indonesia–Malaysia border The border between the Southeast Asian countries of Indonesia and Malaysia consist of both a land border separating the two countries' territories on the island of Borneo as well as maritime boundaries along the length of the Straits of Malacca,
Languages of Brunei specified, it is generally assumed to be a variety of Standard Malay that is similar to the standard varieties promoted in Malaysia and Indonesia. In fact, the use of Standard Malay and Brunei Malay can be described under the concept of diglossia, with Standard Malay taking the H(igh) role and being used in formal domains such as teaching and official speeches, while Brunei Malay functions in a L(ow) role, being used in informal domains such as between friends and in local shops. In terms of pronunciation, the Standard Malay of Brunei is rhotic, so there is an [r] at the