<prompt> Hlalosa hore na web crawler ke engnan  <response>: Instruction in English: Describe what a web crawler is . Response in English: A web crawler, sometimes referred to as a spider, is a software program or script that systematically browses the internet to index web pages and collect information. Often used by search engines, web crawlers scan web pages and follow the links on those pages to find new pages and add them to their index. The information collected by the web crawler is used to improve the search engines performance and accuracy by providing relevant and up-to-date search results.Web crawlers can also be used for various other purposes, such as data mining, site monitoring, archiving, and gathering marketing intelligence. However, most web crawlers are designed to follow rules and protocols such as robots.txt files, which tell them which pages they are allowed to crawl and which ones they are not. This helps to prevent overloading or damaging websites with too many requests. . Response in Sesotho: Web crawler, eo ka linako tse ling e bitsoang sekho, ke lenaneo la software kapa mongolo o shebang marang-rang ka mokhoa o hlophisitsoeng ho supa maqephe a tepo le ho bokella lintlha. Hangata e sebelisoa ke lienjineri tsa ho batla, bakhanni ba marang-rang ba hlahloba maqephe a tepo ebe ba latela likhokahano tse maqepheng ao ho fumana maqephe a macha le ho a kenya indexing ea bona. Litaba tse bokelletsoeng ke web crawler li sebelisoa ho ntlafatsa tsebetso ea enjine ea patlo le ho nepahala ka ho fana ka liphetho tse nepahetseng le tsa morao-rao. Li-web crawlers le tsona li ka sebelisoa molemong oa merero e fapaneng, joalo ka ho rafa datha, ho beha leihlo sebaka sa marang-rang, ho boloka litlaleho, le ho bokella bohlale ba ho bapatsa. Leha ho le joalo, li-web crawlers tse ngata li etselitsoe ho latela melao le liprothokholi tse kang liroboto.txt lifaele, tse ba bolellang hore na ke maqephe afe ao ba lumelletsoeng ho a khasa le hore na ha se afe. Sena se thusa ho thibela ho tlala kapa ho senya liwebsaete tse nang le likopo tse ngata haholo. 