subpage!

[mvlcek]

In words, I want to see list of all (children) sub pages with links to them.
I need function which I might use in page content.

I18N plugin: For the top-level pages use:

<?php get_i18n_navigation(return_page_slug()); ?>

For the pages below the selected top-level page use:

<?php get_i18n_navigation(return_page_slug(),1,99); ?>

For more information see here.

and second thing:
Where can I find list of commends witch i can use in editor (like (% gallery name=thing %) )
I'm reading plugins .php files but that does not helping.

Each plugin has its own method of being included in a page. It just so happens that by now most of the plugins use the (% ... %) syntax, it's more or less standard now.
But there is no list, you have to look at the plugins' documentions.