You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Web_browser

Context:
A browser extension is a computer program that extends the functionality of a web browser. Every major web browser supports the development of browser extensions.

Question:
A computer program that continues the functionality of a browser is called what?

browser extension