Opens new tabs from the location bar, by conditions. This provides only following features:
* Always open new tab by any operation in the location bar.
* Open new tab next to the current tab if the URI is a part of the website you are browsing in the current tab. (Or, open new tab next to the current tab always.)
Yes, they are included in famous tab-related addons, Tab Mix Plus etc. This is for people who want only these features (and don't want other needless features.)
By the way, this is originally develped as a part of another addon Tree Style Tab ( http://piro.sakura.ne.jp/xul/_treestyletab.html.en
). If you install both addons, new tabs from the location bar will become children of the current tab.