Meaning of PageStyle as a class parameter

[Paul A. Rubin]

On 6/13/22 18:03, tush via lyx-users wrote:
> I am building my layout file and I want to better understand the effect of
>
> PageStyle empty|myheadings|...
>
> Inserting this line into my layout file does not make any apparent effect.
>
> Moreover, I looked at the content of `memoir.layout` and I see that there are multiple page styles for this doc class:
>
> `PageStyle   empty|plain|headings|myheadings|ruled|Ruled|companion`
>
> After loading this layout file, when I go to Document Settings->Page Layout, I see in the drop-down the only the four regular ones: Default,empty,plain,headings and fancy.
>
> I expected the drop down list to be updated according to the arguments pass to `PageStyle`.
>
> Then what is the meaning of this class parameter?
After setting the document class to memoir and before switching to the 
page style setting, did you click OK or Apply to apply the layout 
change? When I start a new document (article layout) and switch the 
layout to memoir, I get the full list of page style choices.

Paul