olemus
failivorming veebileh(ted)e sisu talletuseks
= file format for archiving one or more webpages

näiteid
.mhtml https://en.wikipedia.org/wiki/MHTML
.maff https://en.wikipedia.org/wiki/Mozilla_Archive_Format
.webarchive, WARC https://en.wikipedia.org/wiki/Web_ARChive