<para>
Class files are used to abstract common functionality and share it amongst multiple
<filename>.bb</filename> files.
- Any metadata usually found in a <filename>.bb</filename> file can also be placed in a class
+ Any <ulink url='&YOCTO_DOCS_DEV_URL;#metadata'>Metadata</ulink> usually
+ found in a <filename>.bb</filename> file can also be placed in a class
file.
Class files are identified by the extension <filename>.bbclass</filename> and are usually placed
in a <filename>classes/</filename> directory beneath the