As part of the move of Agaric content from Agaric.com to data.agaric.com, we needed to create a bunch (1,592 to be precise) redirects that look like this one:
RewriteRule ^nice-menus-drop-down-bug http://data.agaric.com/node/1048 [NC,R=301,L]
Stefan, in his wizardry, had already pulled a tab-separated-value file of the old path to the new URL, so that what we had was:
nice-menus-drop-down-bug http://data.agaric.com/node/1048