Perplexity has the ambition of being more accurate than others by providing sources for its output. See an example answer.
In this page we will explore three specialised uses of Perplexity:
If you check the perplexity form:

there are two buttons at the bottom, one for research and one for labs.
This is used to retrieve multiple documents (sources) related to your query. This means your query will be expanded and the output more comprehensive.
Work in progress
This is to generate files. This could be
Work in progress