-2. Use [[ikiwiki-transition]] to move all existing aggregated `.html`
- files. The command to run is `ikiwiki-transition aggregateinternal $srcdir`,
- or if you have changed the `htmlext` option to something other than "html",
- `ikiwiki-transition aggregateinternal $srcdir $htmlext`
+2. Use [[ikiwiki-transition]] to rename all existing aggregated `.html`
+ files in the input directory, and delete the corresponding files from
+ the output directory. The command to run is
+ `ikiwiki-transition aggregateinternal $setupfile`