diff --git a/pomodoro_to_harvest.py b/pomodoro_to_harvest.py
index 14dc50b..22d45e0 100644
--- a/pomodoro_to_harvest.py
+++ b/pomodoro_to_harvest.py
@@ -13,6 +13,8 @@ timelog["time"] = 30
 timelog["date"] = timelog["started"].dt.tz_convert("US/Pacific").dt.date
 timelog["day_of_week"] = pd.to_datetime(timelog["date"]).dt.day_name()
 
+# If a project has been specified (task prefixed with a colon), then put the
+# project in its own column.
 timelog['project'] = (np.where(timelog['description'].str.contains(': '), timelog['description'].str.split(': ', 1).str[0], None))
 timelog['description'] = (np.where(timelog['description'].str.contains(': '), timelog['description'].str.split(': ', 1).str[1], timelog['description']))