Template:Circa/doc/sortable
If the parameter "sortable=yes" is specified, the template generates invisible text that will cause the column to sort correctly in sortable tables. However, it is at the cost of having that invisible text read out audibly by many screen readers. "Col 1" without the parameter does not sort correctly. "Col 2" with the sortable parameter sorts correctly.
| Title | Col 1 | Col 2 |
|---|---|---|
| Foo | 1066 | 1066 |
| Bar | c. 1510 | c. 1510 |
| Baz | 1956 | 1956 |
| Jaz | c. 410 | c. 410 |