His phone vibrated on the desk. He didn't pick it up. He watched the screen, his heart hammering against his ribs. He moved his mouse to click the "Up to Higher Level Directory" link, desperate to see who owned this server, but the link was dead.
: This could refer to the top level of a directory hierarchy, essentially the root or highest level. Alternatively, it might imply a ranking or a top list, such as the most popular eBooks. index of ebooks epub parent directory top
It is a "hacker" style trick used by many to find direct downloads of files without visiting landing pages, ads, or paywalls. His phone vibrated on the desk