Because Brunei Malay is not usually written down, the spelling is sometimes uncertain. This particularly affects an unstressed syllable near the start of a word, which may be written with 'e' or with 'a'. Look at the following picture, taken of two signs along the Tasek Lama / Markucing forest trail:
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Even though the two signs are next to each other, they do not agree on how to spell the name of the place: should it have 'e' or 'a' in the first syllable?