A few hours I can not solve the question:
I have a menu like:
page1
 page11
 -page12
 page13
page2
 page21
 page22
 page23
I need that on all child pages of page 1(those of 11, 12, 13) a menu with all child pages of page 1 should be displayed, and so on the other pages
Thanks in advance for the answer

1 Answers 1

If the pages are designed as a parent-child, then you can try this:
wp_list_pages(array(
   'child_of'=>wp_get_post_parent_id(),
));