The 'what' tag specifies which region of the section to modify.
The 'value' attribute value is mapper-specific and is not defined here.
It can be
any expression understood by the mapper to designate the section region to modify.
The 'what' can contain any number of occurrences of any three elements
replace - replace the designated region
add - add a new entry to the region
clear - clear the region
remove - remove the designatedregion
They are stored verbatim for the
mapper to peruse.
The 'what' tag specifies which region of the section to modify.
The 'value' attribute value is mapper-specific and is not defined here.
It can be
any expression understood by the mapper to designate the section region to modify.
The 'what' can contain any number of occurrences of any three elements replace - replace the designated region
add - add a new entry to the region
clear - clear the region
remove - remove the designatedregion
They are stored verbatim for the
mapper to peruse.
