udm_cat_list() returns array listing all categories of the same level as current category in the categories tree.
The function can be useful for developing categories tree browser.
Returns array with the following format:
The array consists of pairs. Elements with even index numbers contain category paths, odd elements contain corresponding category names.
$array[0] will contain '020300'
$array[1] will contain 'Audi'
$array[2] will contain '020301'
$array[3] will contain 'BMW'
$array[4] will contain '020302'
$array[5] will contain 'Opel'
...
etc.
Following is an example of displaying links of the current level in format:
Audi
BMW
Opel
...