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	1510 c. 1510
Baz	1956	1956
Jaz	c. 410	0410 c. 410

{| class="sortable wikitable" style=text-align:right;
|-
! Title!!Col 1!!Col 2
|-
| style=text-align:left; | Foo|| 1066|| 1066
|-
| style=text-align:left; | Bar|| c. 1510|| {{circa|1510|sortable=yes}}
|-
| style=text-align:left; | Baz|| 1956|| 1956
|-
| style=text-align:left; | Jaz|| c. 410|| {{circa|410|sortable=yes}}
|}