Of course there's a "Custom V" layout in the Pages palette, because there's always a "Custom V" layout when a doc is open.
Not if you choose Vertical or Horizontal from View pages. If you do that with all docs closed all new docs will display with your choice.
If you choose By Alternate Layout you might at a minimum get Custom V, but it would also show any alternates:
You can check whether a page is different from the document setup by selecting only that page in the Pages panel and checking the Edit page pop-up. Here my page size is 3x3 and the doc size is letter. If you select multiple different sized pages in the panel nothing will be checked.
Is there a point to the Document Setup's Page Size being displayed as letter in the above scenario?
The Document Setup's size would handle any pages that aren't custom. So here pages 3-5 are not custom and they respond to Document Setup, while the custom sized pages 1-2 remain unchanged:
This answer was thorough and I give props to community members who take time out of their day to try to help people like me with questions. You, rob day, are awesome[squared]. And I understand that your reply may help others visualize what I was talking about. But this answer did not answer/solve my problem.
My document (and my InDesign's default) is already set to "By Alternate Layout." This document has one page only. Its one page is (not obviously) "custom," which is a ridiculous label when there are no other pages and something named "custom" appears in the pages palette even when there are no custom pages.
Here is a screenshot of what I'm talking about:
I need a simple way to see in the above scenario (other than scrutinizing the rulers if they're visible) that this document is not the size it claims to be. It can be a keyboard shortcut, a palette setting, or a preference.
Here’s how Acrobat, in contrast, handles reporting page sizes:
Each page, as you view it, shows that page's size. Done. Of course you still can't tell quickly in a multiple-page file if one of them is a different size, but Acrobat is not a layout app.
If someone can tell me what preference setting or keyboard shortcut or panel (or whatever) will make the InDesign page sizes more obvious and less deceptive, that would help me.
Its one page is (not obviously) "custom," which is a ridiculous label when there are no other pages and something named "custom" appears in the pages palette even when there are no custom pages.
When you view By Alternate Layout the name of the layout could be anything—yours just happens to have the word custom in it. So here I have a single layout named Rob's Layout:
Double-click the layout name to edit it.
I could add another layout and give it any name:
that this document is not the size it claims to be.
There can be only one document size, but the document pages can have any size applied. If you add a new page with the [None] master applied to it the new page size will match the document size.
The Control or Transform panels will give you the page dimensions if you click on a page with the Page tool. Here I've imitated your document