| 1 | Descriptive slot position label added. | |
| 2 | Used by millwrights and mechanics for enlarging keyways, slots, etc. , and have one safe edge. | |
| 3 | Varying the shape of the slot miniaturizes the size of the antenna. | |
| 4 | An electromagnetic model for multilayer planar structure with single slot was built in spectral domain. | |
| 5 | The lamp cord should firmly bottom out in the end of the dimmer housing slot. |