Didn't work. Created the "language variable" called "lbl_seo_title" with the slogan and put this into the home.tpl:
Code:
{strip}<TITLE>
{if $config.SEO.page_title_format eq "A"}
{strip}{section name=position loop=$location}
{$location[position].0|escape}
{if not %position.last%} - {/if}
{/section}{/strip}
{else}
{strip}{section name=position loop=$location step=-1}
{$location[position].0|escape}
{if not %position.last%} - {/if}
{/section}
{$lng.lbl_seo_title}{/strip}
{/if}
</TITLE>{/strip}
but it didn't show any slogan in any of the titles.