Change binding direction of an existing indd file

[Dianne at Allegra]

How can I change an existing document that is set up with right binding to left binding? My CC is set for english with left binding, but I have an indd file sent from a translation service bureau that was set for right binding and that's how it opens. The language does not read right to left so I need to fix this for press. I am not creating a new document, but need to change this document to print correctly. It's 72 pages and I really don't want to copy and paste into a new 

[Willi Adelberger · Accepted solution]

Zou have to have installed an InDesign version with ME support.

Then go to Menu > Document Setup … > Click on the left binding button.

[Dianne at Allegra]

Thank You!! I hade a version installed for when I work on the arabic versions - I sure wish they'd add this feature to the English one... so simple yet have to install different versions to do it.

[Willi Adelberger]

You can install any ME version upon an existing other version. It will add the plugins needed to work with ME features. FOr example, I have often to typeset theological books with Hebrew text and German text. My primary UI is German. Then I changed in the CC Desktop App in the settings the program language (scroll down until your finger burns) to Hebrew Support. Now I install those programms I often need for these books again. After that I change the language back to my primary language (German). Now runs InDesign with German UI and additional menu and dialogue elements for typesetting in Hebrew and a bunch of further fonts for Hebrew support is also installed.

[Peter Kahrel]

You can use this script to toggle the active document's binding (works in any version):

d = app.activeDocument;
if (d.documentPreferences.pageBinding === PageBindingOptions.LEFT_TO_RIGHT) {
  d.documentPreferences.pageBinding = PageBindingOptions.RIGHT_TO_LEFT;
} else {
  d.documentPreferences.pageBinding = PageBindingOptions.LEFT_TO_RIGHT;
}

[jeff_5742]

The script does nothing for me.

[Peter Kahrel]

When I run that script repetedly the pages panel toggles between these two states as expected:

You don't see that?