B4J Question ABMMini Server.Startpage must have Page.PageHTMLName = "index.html"

Playing around with ABMMini I set up 2 pages Start_Page and Other_Page.

Other_Page is launched via https://www.b4x.com/android/forum/t...lly-go-from-1-to-the-other.162178/post-994956

In my never ending quest for tidyness I changed Start_Page.Initialize to have

Page.PageHTMLName = "Start.html"

and got into no end of bother - until I changed it to

Page.PageHTMLName = "index.html"

then everything works fine.

Trawling the forums I can find no explicit information that says this is essential.

Is there anything?

Is it ABMMini specific?

I'd be interested in any feedback from ABMaterial experts...