<https://forum.affinity.serif.com/index.php?/topic/91168-rulers-in-publisher/#comment-1075104>
<http://schema.org/text>
"@Cristina_D: If I understand what you're asking, it's explained in this Help topic: https://affinity.help/publisher2/en-US.lproj/pages/DesignAids/measuring.html\n \n\n\n\tBy the way, to \"tag\" another user, you must:\n \n\n\n\t\ttype an @ sign\n\t \n\t\n\t\tstart typing their username\n\t \n\t\n\t\tselect the name you want from the dropdown list of matching names.\n\t \n\n\tIt will then appear as a gray-highlighted field, as at the beginning of this post.\n \n"
<https://forum.affinity.serif.com/index.php?/topic/91168-rulers-in-publisher/>