Editing Encyclopedia:Manual of Style (section)

=====Instead of a hyphen, use an en dash when applying a prefix or suffix to a compound that itself includes a space, dash or hyphen<span class="anchor" id="En dash across open compounds"></span>=====
{{Shortcut|MOS:AFFIXDASH|MOS:PREFIXDASH|MOS:SUFFIXDASH}}
<!-- This list of examples only includes compounds that have a space or dash in them, but this should also apply when a compound includes a hyphen. Such examples should be included, if they exist. -->
*{{xt|ex–prime minister Thatcher}} (consider recasting: {{xt|former prime minister Thatcher}})
*{{xt|pre–World War II aircraft}} (consider recasting: {{xt|aircraft from before World War II}})
*{{xt|[[post–September 11 anti-war movement]]}}
*{{xt|[[Trans–New Guinea languages]]}}
*{{xt|[[post–Hartree–Fock]]}}
*{{xt|[[Afro–Puerto Rican]]}}
*{{xt|Turks and Caicos–based company}}
*{{xt|a Rodgers and Hammerstein–esque musical number}}

The form of category names follows the corresponding main articles, e.g., {{cat|Trans–New Guinea languages}}. 
However, the principle is not extended when compounding other words in category names, e.g., {{cat |Tennis-related lists}} and {{cat |Table tennis-related lists}} both use hyphens.

{{Anchor|To separate items in certain lists}}<!-- Old section name, may be linked-to. -->