'''NOTE:''' Your display text cannot contain any vertical bars in a '''switch''' because the switch searches for the bar to look for the next case you are asking for. Vertical bars will most commonly be found in a table, which begins with <nowiki>{|</nowiki>. You can either put the information in another template and call that template to be inserted, or use HTML code instead.
===Tables===
The MediaWiki Wiki says that it is best to avoid table making unless needed due to the complication of table code... but I say tables make some wiki pages so much prettier to look at, and can make information easier to present. Maybe just try to get it right the first time so you don't have to edit it later! Or, if you're brave enough, maybe you can come up with a template to make tables easier!
===Table Construction Markup===
Let's start with the markup. The following table is taken from mediawiki.org.
{|