Wiki has a distinct markup for links that go to pages outside the wiki. Here we suggest a style for using that markup that suites both writer and reader.
Any external link should be part of a paragraph that explains why one might be interested in the external content.
Any external link caries with it the loss of context as a new tab brings with it new formats, look and feel.
The link-word convention suggests that all external links be composed of a single word, lower case, trailing a paragraph, punctuated only with the automatic off-site link icon.
One should choose a word that gives a clear indication of page type, but not page content. The content has already been addressed by the preceding paragraph.
Elephants are large mammals of the family Elephantidae and the order Proboscidea. Traditionally, two species are recognised, the African elephant (Loxodonta africana) and the Asian elephant (Elephas maximus). wikipedia
These words indicate the type of content one would expect to find. They are suggested when the content represents a viewing commitment distinctly different from native web browsing.
pdf — pdf formatted as pages
mp3 — audio ready to play or download
video — video ready to be played
post — a blog permalink
doc — a shared google doc page or similar
online-ebook — a full book displayed in a custom online reader.
These words refer to resources available on public sites familiar within a community.
wikipedia — articles, people, searches
github — repos, files, issues
youtube — movies, channels
nyt — news
blog — a blog's front page
amazon — books, stuff
soundcloud — community annotated sound files
wayback — a snapshot from the Wayback Machine
slideshare — presentation viewer
These words describe web pages when no more specific word applies.
site — a website home page
page — a specific page within a website
These words warn users that they should not expect their simple browsing behavior to continue through these links.
download — expect a download to start
pay — expect a paywall login
These words describe a reason to link that might have more to do with where they appear than where they go.
source — used when a caption describes data.