* [[!shortcut name=pmid url="http://pubmed.gov/%s"]]
* [[!shortcut name=unihan url="http://www.unicode.org/cgi-bin/GetUnihanData.pl?codepoint=%S"]]
* [[!shortcut name=arxiv url="http://arxiv.org/abs/%s"]]
-* [[!shortcut name=doi url="http://dx.doi.org/%s"]]
+* [[!shortcut name=doi url="https://doi.org/%s"]]
+* [[!shortcut name=hdl url="https://hdl.handle.net//%s"]]
To add a new shortcut, use the `shortcut`
[[ikiwiki/directive]]. In the url, "%s" is replaced with the