Editing MycoTaxa:Village pump (technical)/Archive 1 (section)

===Checking consistency===
On a related point, for both a section and an article edit, it would be desirable to trap the case where the article contains one or more &lt;ref> tags without a &lt;references/> tag that will expand them, or where it contains two or more &lt;references/> tags.  (Experiment indicates that each &lt;references/> expands all &lt;ref> tags appearing earlier in the article, so there must be exactly one &lt;references/> tag that is after all &lt;ref> tags.)  I suggest that when a '''Show Preview''' is done, a check should be done on the entire article as it would exist if '''Save Page''' was done at this point, and if any of these erroneous situations exist, a warning should be issued (either within the preview window or elsewhere, but prominent enough that it won't be missed).

I think this should be a warning issued at preview time, not an error message preventing the save, because you have to consider what happens when someone adds the ''first'' reference to an article.  If they do it during a section edit, they don't want to be blocked from saving because they forgot to add a References section first.  Similarly, someone doing a cleanup pass through an article from top to bottom in order might add several references, saving sections one at a time, before they get to the end and add References.  But they need to be reminded to add that References section.