Contains the definition of a custom location type.
<CUSTOMDIV NAME="name"> ... </CUSTOMDIV>
The CUSTOMDIV element must be a child of the CUSTOM element.
The following child elements are supported:
A LOC element that has its TYPE attribute set to this name contains all of its data inside its subelement of this name.
<CUSTOMDIV NAME="CUSTOM_FOO"> ... </CUSTOMDIV>
A location of this type would look as following:
<LOC ID="1" TYPE="CUSTOM_FOO"> <CUSTOM_FOO> ... </CUSTOM_FOO> </LOC>