Layer reference

Layers are the backbone of what makes APLS so powerful. They organize annotations into structured linguistic data, allowing you to search the corpus for complex patterns and export information about linguistic phenomena. Since layers belong to transcripts, you can see layer annotations in context when you view a transcript. (As a reminder, text formatted with a dotted underline, like dictionary_phonemes, refers to a layer name.)

The pages in this section break down how layers work:

1. A typology of layers with the fundamentals of how layers work, such as the difference between word layers and segment layers.
2. A detailed layer field-guide that contains all the information you need to know about each layer.
3. A rundown of notation systems so you can decode the symbols that different layers use, such as the DISC phonemic alphabet.
4. A quick reference card that is useful for refreshing your memory about how each layer works.