When using an arraymap function to present a list of items to visitors, say from a property value, I receive each item in the array as a list.
orange, banana, apple, grape
I want that list to include the word "and" for the final item in the list as the coordinating conjunctions(as what happens in the SMW Factbox for properties with multiple values).
orange, banana, apple, and grape
That fruity example is not incredibly applicable. I use #arraymap to display a list of authors for a particular news article on my wiki.
By: Chris, Sam, and Yolanda.
I'm a fan of the Oxford Comma, but that would require additional settings to use/not use.
A simple conjunction=and or conjunction=or syntax would suffice for many uses.
Briefly discussed at the SF Extension talk page.