Application Builder: What is the significance/function of "page sequence"?

Because we are always pressed for time, I have developed the nasty habit of glossing over things that may be opaque to me, with the mental reservation that I will re-visit the issue "when things calm down".
One of those opaque things is the function, significance, or use of "sequence" in the context of APEX Application Builder and application pages.
I am working through the Oracle-By-Example application labeled OBE_PROJECTS. I have created the Master-Detail form, but it has not come out as expected. According to the instructions, when I created the page, I designated the home page as its parent. Yet, when I run the application, the icon for the master-detail form does not appear.
I assume that I've fat fingered something when I built the page and attempt to correct it. I think that the answer will lie in the task "Reparenting page hierarchy". When I look at the "Create/Edit Breadcrumb Entry page", I see in the "Entry" region, that the Parent Entry is, indeed, correct ... that is "Home (Page 1)". On the other hand, the text box labeled "Sequence" is set to "10". And this is the same value as the Home Page itself. Can that be correct? Shouldn't my Master-Detail page have a sequence number subordinate to the Home Page?
Any help/elucidation will be appreciated.
Regards,
Gus

Varad,
I hadn't gotten that far yet. I'm still following OBE script and accessing the page from the "Run Page" icon in application builder.
The issue itself, pages not showing up, is solved for me. I had anticipated that simply declaring the parent of Master-Detail page to be home page would automagically make those objects appear on the home page.
Slogging through the Oracle By Example, I learn that one must actually edit the home page to have them appear (how barbaric!)
But, the question of exactly what "page sequence" means and how it's supposed to be used is still there.
Thanks for the Response,
Gus

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