This addon is a plugin. You need to extract it to your /plugins folder to install it.
This plugin adds First and Last Links to the discussions page and top and bottom links to comments on each discussion page.
Adds optional First and Last Links to the Main Discussion Page First - link to First Post in discussion (optional) Last - link to Last Post in discussion (optional)
Adds optional Top and Bottom Links to each comment in Discussion Top - link to first comment on page (optional) Bottom - link to Last comment on page (optional)
Logged in users could go to first comment on topic via F from discussion topics.
and non-logged in users can go directly to last comment from discussion topics by clicking L
and vice versa.
up and down arrows scroll the page to top of comments and bottom of comments on individual discussion page.
see last images for version 1.5
v1.4.3 - fix mouse pointer to hand (thx to @ictsource for suggestion) v1.4.5 - modify arrows or F and L to your choice in within the plugins locale definitions.php. v1.5 - changed link anchoring. Tested in version 188.8.131.52 and vanilla 2.1b1
updown arrows positioned on right in version 21b1 and on left in 184.108.40.206
As with all plugins READ the readme if you want to make things easy for yourself. As with all plugins, it is a good idea to disable plugin, install new version, and then enable and then check settings.