Custom Reports Using Eguile
From GnuCash
What is eguile?
eguile is a way of processing a template file to create a guile script.
More specifically, within GnuCash, guile is used to combine HTML and guile code to create a report, such as an invoice or balance sheet.
The GnuCash version of eguile is eguile-gnc.scm, written in early 2009 by Chris Dennis, and based on Neale Pickett's eguile.scm.