strange (?) template tag info in wiki

[datiswous]

On the following wiki page:
http://get-simple.info/wiki/themes:template_tags

I see the following:

Code:

get_navigation( $currentpage = get_page_slug(false), $classPrefix = "" )

<?php get_navigation( 'tour' ); ?>

Returns a list of pages that are added to the main menu from each of their edit screens. Required option is what is shown above. This creates a class of 'current' on the <li> element that is currently the active page. You need to supply the <ul> or <ol>

Is this new? Previously it looked like this:

Code:

get_navigation()

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

(this is how it is still shown in the Russian wiki section and the theme conversion tutorial)

Edit: it seems all the titles have more info between the squares (), but this makes less sense to non programmers I think. At least it is less clear at first.

Tittle: tag without <?php and ?> around it, extra options shown between ()
code box: tag with <!php and ?> around but no extra options shown between ()