An insight into displaying HTML text in a report

I hope that I am not revealing something new that one has to use the DAYS table in order to display HTML text in a report - e.g. WWWORD_2XT. This is even documented on page 105 of the SDK for version 21.0 in a section entitled 'Displaying HTML Text in Reports'.

I have always thought that the use of the DAYS table was some kind of magical sign to the program sitting behind the report generator that HTML text has to be shown (in the same way that any field containing the strings FILENAME or BIRTHDAY will act in a special way).

It turns out that this is not true. Idly I was looking at some standard reports when I came across the procedure COMPMSG; the SQLI stage of this procedure links the STACK table and enters two tuples, 1 and 2. I wondered what this would do in the report: line 30 has this expression

(STACK.ELEMENT = 1 ? EXTMSG.MESSAGE : EXTMSGTEXT.TEXT)

In other words, one doesn't have to use the DAYS table to display HTML text in a report; it's simply convenient as this table already has tuples 0 and 1 (it has more, but that's not relevant). And so my 'magic value' hypothesis is proven false. Intriguingly there is no use of EXTMSGTEXT.TEXTLINE in this report.

Will I use this option? I doubt it, as one has to set up the linked STACK table first whereas the DAYS table is always available.