@@ -317,7 +317,9 @@ multiple rows to single values. To perform aggregations in Rel8, we can use the
317317the aggregation, and returns aggregated rows.
318318
319319To start, let's look at a simple aggregation that tells us how many projects
320−exist::
320+exist:
321+
322+.. todo::
321323
322324 >>> error "TODO"
323325