I am working on a book of poems. I need to make sure that the (left aligned) text running within each page is centred on the longest line. As far as I am aware there is no mechanism for doing this automatically in InDesign and besides, the optical centre will always be different from the actual centre.
So I need to manually add an indent to every page to indent the text until it feels centred on the page. My problem is that some of the stanzas/paragraphs run between two pages which each need different indentation. I can only apply indent to a whole paragraph, meaning it will affect the beginning of the paragraph on one page and the end on another. If the second page requires a different indent this means the end of the paragraph that has run over from the previous page will indented correctly for the previous page and not the current page or vice-versa.
Is there any sensible solution to this problem?
In the following example, the paragraph in red runs over both pages, but each page requires a different left offset.