What WordPress tells the plugin

WordPress knows whether the active language is right-to-left. When it is, the plugin marks each strip as right-to-left and sets the direction of each group of items to match. Text and logos then follow each other in reading order for that language.

Why the track stays left to right

The track that carries both groups is always laid out left to right. If it followed the page, the second group would end up on the wrong side of the first and the move of one group's width would not line up. Keeping the track fixed, and the groups inside it directed, is what keeps the loop seamless on an RTL page.

Which way should it roll?

That is a design choice, and the plugin does not make it for you. Left and Right are both available on any site. Pick the one that suits your design and test it with your own content.

Try the right-to-left setting

Switch on the right-to-left option in the tool below and type a line of your own language.

Try a marquee

Change the settings and watch the same engine the plugin uses. Nothing you type leaves this page.

What has been tried

The right-to-left markup is checked by the plugin's own tests. The motion of an RTL strip on a real right-to-left site has had less testing than the left-to-right case, so a note on what you see is welcome.