This is in the twentyeleven theme. Can somebody tell me what this is?
<span class="%1$s">Posted in</span> %2$s', 'twentyeleven' ) ^^^^ ^^^^
My best googling tells me it's something to do with i18n, but I don't think that's the full story because some of them spit out things like author names and post titles, like this example:
<a class="url fn n" href="%5$s" title="%6$s" rel="author">%7$s</a> ^^^^ ^^^^ ^^^^
At any rate, is this something I can/should be using? What's it actually called, and where is it documented?
Sorry if this is a dumb question, but it's a hard thing to google! Thanks!