Links - Internal links to pages and sections

Internal links are links to other pages in the wiki, or to sections of pages.
Suppose you want to link to a page with the name PageName from another page.
The link is made in this way: [[PageName]]

You can also link to a section in a page.

Suppose these sections are on the page [[PageName]]
You can link to Subsection 2.2 from anywhere in the wiki, also from the same page as the section is on, by writing:
[[PageName#Subsection 2.2]]
Or to Section 1 by writing:
[[PageName#Section 1]]

For example:
[[Main Page#1930s]]
gives:
Main Page#1930s