I'm using pandoc to produce booklets. It's two sided 2up style printing that ends up having 4 "pages" per physical page. Generally in print these are called "signatures" You fold them and end up with neat little booklets. Anyhow, It's imperative when arranging these pages for print that the total number of pages be a multiple of 4 so the imposition software (pdfjam) can arrange the pages for easy folding and stapling. Anyhow I've come to ask if anyone has some direction for me.I'm pretty sure I need to write a pandoc lua filter so the filter can add pages in a specific location (near the end) if the total number of pages isn't a multiple of 4, but at any rate has anyone done this before? I haven't been able to find any information regarding this.