Preformatting and escaping not documented

It is not documented on XWikiSyntax how to create preformatted text and how to escape WikiSyntax.

For example, if I open "Google Summer of Code" page and enter 1 man month as efforts, preview will show huge "man month" text because it thinks it's heading 1.

Also it is not described how to enter preformatted text, e.g. code snippets.

Other issues on the same page:

• new line with double backslash is not documented.
• Paragraph example seems to be incorrect (everything is in the same line).

Another example: try to show this on Wiki page:

• filter.acronym.match=\\b[A-Z][A-Za-z0-9][A-Z0-9]
  b(?![^<\\[][>\\]])
  I can get one or three backslashes, but not two! BTW JIRA has a problem, too, there should be another double backslash instead of new line in the middle of the expression. Try to edit it and you will see.