Wiki page names are usually two or more Capitalized Words - run together: WikiName.
The result is distinctive enough to be recognizable by the software, yet still readable by people - and much easier to type than an html hyperlink.
Smooshing together words makes for more regular choices than wide-open, whitespace-containing text phrases. The idea is that the WikiName is easier to remember and more likely to be reinvented the same by different people - promoting easier collaboration.
In the abstract, WikiNames are the terms which embody the wiki's topic.
The ../ZWiki version of WikiName can include "~" tildes as if they were
lowercase letters, and numbers as if they were uppercase letters - but
neither may occur at the beginning of the name. So,
AFL~CIO are valid WikiNames.