RSSextra is an add-on block for the Headlines module. It is intended to be used as a replacement for the default Headlines RSS block, providing the same functionality and more.
The archive comprises of three files. rssextra.php is the block function and must be placed in {webroot}/modules/headlines/xarblocks/ folder. rssextra.xd and modify-rssextra.xd should be placed in {webroot}/modules/headlines/xartemplates/blocks folder. Copy and over-ride these as necessary.
Having copied the files as directed, you will then need to register the block in Xaraya. To do this go to Admin Blocks > Block Types > Add New Block Type. In the dropdown that appears select Headlines, then click Scan Module. A list of all Headline blocks that Xaraya found will appear. Select rssextra from the list, then click Add Block Type. Once you've done this you can click on Add Block and proceed to create an RSSextra block as you would any other Xaraya block.
As well as having the same functionality as the Headlines RSS block, RSSextra also provides the following functionality