Template:-/doc

Use this template after any floating elements and before elements you do not wish to float together with the first set. This uses a line break, which may introduce an ugly extra blank line. If you want to avoid that, use template:clear instead. Do not use this template to deliberately add whitespace and blank lines between non-floating elements.

Details
Template:- contains the markup:  This causes any previously established float to clear.

The unusual name of this template is a for an imaginary horizontal line, which separates floating elements above from those below. Some editors prefer the mnemonic ("clear"), which simply redirects to this template in Wikipedia. However, don't confuse template:clr with template:clear, which is a different template that uses  instead of   and so does not introduce an extra line break.