Use in tables
Anchors may be used within tables, subject to certain restrictions. The {{anchor}} template may be used in the caption and cells of a table, but not those portions of a table that are outside the caption and cells. It is used on the table's caption thus:
|+ {{anchor|FooX}} A table caption
and the following forms of cell are valid:
!{{anchor|Foo1}} A header cell
!style="background:white;" |{{anchor|Foo2}} A header cell with styling
|{{anchor|Foo3}} A data cell
|rowspan=2 |{{anchor|Foo4}} A data cell spanning two rows
You need to ensure that the {{anchor}} is not in that portion of the markup intended for the classes, styles etc. Thus, {{anchor}} cannot be placed anywhere on lines that begin with {| (start of table) or |- (new row), and the following forms of cell are not valid:
!{{anchor|Foo1}} |A header cell
!style="background:white;" {{anchor|Foo2}} |A header cell with styling
|{{anchor|Foo3}} |A data cell
|rowspan=2 {{anchor|Foo4}} |A data cell spanning two rows
If it is necessary for an anchor to be in any of these positions, a different technique is used—the id= attribute. This is placed in that portion of the markup where the classes, styles etc. may be used, as follows:
{| id=FooX class=wikitable
|- id=FooY
!id=Foo1 |A header cell
!style="background:white;" id=Foo2 |A header cell with styling
|id=Foo3 |A data cell
|rowspan=2 id=Foo4 |A data cell spanning two rows
The id= attribute may appear before, between or after any other attributes that may be present, but only one id= attribute may be used in each of these areas.