This mode defaults when the target element is terminal and repeating or when the target element is terminal and contains attributes. This mode enables the looping over each instance of the source element and for each looping instance copies its value to the target element.
Note:
When this mode is used, the properties on the link contain an extra property
called "ForEach select" with a value as the name of the source
element. This property creates the context over which the values of each
instance are copied.
If you define a rule to transform the source value as it is copied over
to the target, the XPath "." appears in the generated XSLT.
This indicates the current Node because it is relative to the node selected
by the "ForEach select" property.