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1 files changed, 2 insertions, 1 deletions
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index ae2d4eced..85e93c4fb 100644
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@@ -809,7 +809,8 @@ General writer options
: Set the request header *NAME* to the value *VAL* when making
HTTP requests (for example, when a URL is given on the
command line, or when resources used in a document must be
- downloaded).
+ downloaded). If you're behind a proxy, you also need to set
+ the environment variable `http_proxy` to `http://...`.
Options affecting specific writers
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