Added a comment.

timetracker.c

@@ -458,6 +458,7 @@ int main(int argc, char *argv[])
                     Hours time = break_time(activities[i].ended - activities[i].began);
                     snprintf(buffer, sizeof(buffer), "%02llu:%02llu:%02llu", time.hours, time.minutes, time.seconds);
 
+                    // TODO: Display the popup under cursor instead.
                     DrawTextEx(state.font, str_activity_type, (Vector2){ start_x + 5.0f, 40.0f + 5.0f }, state.font_size - 5.0f, 2, WHITE);
                     DrawTextEx(state.font, buffer, (Vector2){ start_x + 5.0f, 40.0f + (F32)(activity_type_d.y) }, state.font_size - 10.0f, 2, WHITE);
                 }