[TYPO3-dev] Override RTE.classesAnchor

[John Angel]

Hi!

How to globally override RTE.classesAnchor settings, without using Page 
TSconfig for each root page of domain:

RTE.classesAnchor.externalLink.altText = My alt
RTE.classesAnchor.externalLink.titleText = My title

I've tried using $TYPO3_CONF_VARS['BE']['defaultPageTSconfig'] in 
localconf.php, but no luck.

Regards,
John