Focus in Gùrùntùm, a language in Nigeria, is marked by a special word a. This marker comes before the important part of a sentence. Gùrùntùm can show different types of focus, like new information or correcting something. The marker a doesn't mean the sentence is finished, it just shows what's important. It doesn't have another job as a perfective marker. When a appears at the end of a sentence, it's showing what the whole sentence is about.