| The focusing mirror preferably has an elliptical shape to reduce off-axis aberrations in the focused beam. |
| A temporary solution is to open a window to let in a little make up air, preferably on the windward side of the house. |
| It is best to use a light-colored preferably white background with black or very dark-colored text. |
| This herb grows in every grassy verge, preferably on the path, just like plantain or waybread, with which it shares most of its uses. |
| Placement of the subscription box should be preferably above the fold or in a pop-up. |
| Drink at least 1.5 litres of liquid per day, preferably unsweetened and alcohol-free beverages. |
