WordPress at a glance
filter is not described

single_cat_title filter-hook . WP 2.0.10

Filters the category archive page title.

Usage

add_filter( 'single_cat_title', 'filter_function_name_2411' );
function filter_function_name_2411( $term_name ){
	// filter...

	return $term_name;
}
$term_name(string)
Category name for archive being displayed.

Where the hook is called

single_term_title()
single_cat_title
wp-includes/general-template.php 1367
$term_name = apply_filters( 'single_cat_title', $term->name );

Where the hook is used (in WP core)

wp-includes/default-filters.php 135
add_filter( $filter, 'wptexturize' );
wp-includes/default-filters.php 136
add_filter( $filter, 'strip_tags' );