I didn't try opening multiple links in one tab, so don't know. There is a Chrome extension, One Tab
https://chrome.google.com/webstore/detail/onetab/chphlpgkkbolifaimnlloiipkdnihall?hl=en (Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.)
Maybe it is something similar to that.
On the opening links with the short labels, that might could well be good for use with Voice Recognition software. You just say the label-letters and the link should open.
