There are two different list enries, and thus tow different Context menus.
Opens the corresponding package context menu
Addons can define contextmenu entries which will appear here. e.g. JDUnrar
By default, JDownloader starts downloading in the same order like the links. From top to bottom. If you prefer one or more links, but do not want to move them to top, you should use the priority system. You can assign a priority from 4 (highest) to -4 (lowest) to each link. JDownloader will download links with a high priority before others.
Opens the destination directory
Opens the link or the page where you got the link from in the browser. If it is a link out of Link Containers, this option is not available.
Removes the selected link(s) from downloadlist.
If a link has been disabled, it can be reenabled here.
Disabled a link. JD will skip this link.
Resets a link. All downloaded parts get deletet. The progress status variables are resetted.
Resume a link. Most hosters support resuming in Premiummode only
Move the selected link(s) to a new create package. You can change the package, by drag&drop, too.
Copies the password of the corresponding package to clipboard
Exports the selected link(s) as DLC
Edits the download destination of this package and all containing downloadlinks
Opens the current destination directory
Changes the packagename
Removes all selected packages and containing downloadlinks See here
Enables all selected packages and containing downloadlinks. See here
Disables all selected packages and containing downloadlinks. See here
Resets all selected packages and containing downloadlinks. See here