The {{" '}} template (or {{Double single}} in long form) is for use at the beginning of a 'single-quoted' quotation that also begins a "double-quoted" quotation (or a double-quoted passage that begins with an apostrophe). Its purpose is to slightly space the double and single quotation marks apart for legibility, without actually inserting a space character. It does this with 层叠样式表, and does so because the insertion of an extranous space character of any kind would be a violation of the 语义网 of the article or other page in which it appeared.

Example (with highlighting added for clarity)
  • Using the template:
Gonzales added, {{" '}}Interesting times' is quite a euphemism for this chaos."
Gonzales added, "'Interesting times' is quite a euphemism for this chaos."
  • For comparison, here is the completely unspaced version:
Gonzales added, "'Interesting times' is quite a euphemism for this chaos."
Gonzales added, "'Interesting times' is quite a euphemism for this chaos."
  • And here is the version with a semantically incorrect non-breaking space character:
Gonzales added, " 'Interesting times' is quite a euphemism for this chaos."
Gonzales added, " 'Interesting times' is quite a euphemism for this chaos."
When rendered, the non-breaking-spaced version looks similar to or the same as the template version, but improperly mixes content and presentation.

The equivalent template when used inside a template parameter that automatically provides double quotes (e.g. |title= in {{cite web}}) is {{-'}} (Template:Space single英语Template:Space single). See also {{' "}} and {{'-}} for the right-hand side versions (manual and parameter, respectively).

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