It can mark text in website pages, similar to manually color marking on paper.
It is a program, with which you can do some marking and basic editing of MHT files. MHT files are files containing complete website pages; they include images and other elements of the page. MHT files normally are created with Internet Explorer (IE). This program -eMarker- can open a MHT file and go into edit mode letting the user format text parts like making bold.