{{Nowrap}}or{{nowrap}} stops wrapping of specific text (which can be inside of a link). Use this template sparingly. It prevents word wraps (line breaks) that might otherwise happen at spaces, hyphens ("-"), or, in some browsers, parentheses. The size of the nowrapped text becomes the minimum width of that paragraph and that can negatively influence the ability of the page to adapt to smaller screens, or alternate representations of the content.
To achieve the opposite effect of {{nowrap}}, you can use {{wbr}}. For more information about wrapping and breaking sentences, see Wikipedia:Line-break handling.
This template may be used with {{Wbr}} and {{Spaces}} to control line-breaking in bulletless lists in infoboxes, to prevent wrapped long entries from being confused with multiple entries. See Template:Wbr/doc#Controlling line-breaking in infoboxes for details.
Handling equal-sign or bar
Templates have problems with parameter data that contains equal-signs "=" or vertical bars "|" (pipes). Note that this does not apply if the equal-sign "=" or vertical bar "|" is inside a wikilink or another template. In the case that there is a bare equal-sign "=" or vertical bar "|", consider using {{Nowrap begin}} + {{Nowrap end}} instead. However, there are also other workarounds:
For text that includes an equal-sign "=", precede the text with 1=, use a triple-brace unnamed parameter {{{|=}}}, or the {{=}} magic word. For example:
{{nowrap}} prevents wrapping within a single template (i.e. not suitable for relatively complex or lengthy content).
{{nowraplinks}} ... {{nowraplinks end}} prevents wraps inside links while allowing wraps between links and in normal text. Very useful for link lists and easy to use.
{{nowrap begin}} ... {{nowrap end}} prevents wraps in both text and links. For the trickier wrapping cases when you need full control, for instance in very complex link lists.
{{word joiner}} prevents wraps for both two adjacent characters.
{{avoid wrap}} prevents wraps unless the space is too narrow to display the text on one line.
{{inline block}} does the same and allows further style customization, but does not automatically add the "avoidwrap" CSS class.
{{spaces}} produces multiple non-breaking spaces (or a single one).
{{wrap}} can be used to provide a (brief) exception within a no-wrapping area.
{{normalwraplink}} allows links to wrap when they otherwise would not.
In particular, to avoid line wrapping when quoting a passage such as a poem or computer code, see Template:Quote § Line breaks – e.g. Template:Blockquote with "poem" tag.