Template layouts- doc layout variable use in layout tag

[robinsowell]

So eeconf 2025 - complex layouts talk notes that the docs don't make it clear you can use a layout variable as the template_group/template value when setting the parameter in the top layout tag. This really opens up some options to conditionally determine what layout to use in earlier templates.

So- note that and it would be nice to include an example of how/why you might do this.

Also worth noting somewhere how well it interacts with caching. Template caching doesnt help- tag caching may well be worth it. Speedy fragment fcaching can be applied to end.