In Die TeXnische Komodie (issue 1/2013) Christian Justen described his use of LaTeX in his work as priest (similar requirements may be encountered in the work of pastors and other ministers of religion). One point was to arrange A5 pages onto A4 landscape paper, either side-by-side or as a booklet. Justen made two Bash scripts for this job; the package provides one Texlua script for both requirements.