<!-- ##### SECTION Title ##### -->
STCategory

<!-- ##### SECTION Short_Description ##### -->
a structure for defining a category.

<!-- ##### SECTION Long_Description ##### -->
<para>

</para>

<!-- ##### SECTION See_Also ##### -->
<para>
#STHandlerEvent, st_handler_set_stock_categories()
</para>

<!-- ##### STRUCT STCategory ##### -->
<para>

</para>

@name: the category internal name.
@label: the category human-readable name.
@url_postfix: the category URL postfix.
@url_cb: a function which will be called when the category is about to
be reloaded.

<!-- ##### USER_FUNCTION STCategoryURLCallback ##### -->
<para>

</para>

@category: 
@Returns: 


<!-- ##### FUNCTION st_category_new ##### -->
<para>

</para>

@Returns: 


<!-- ##### FUNCTION st_category_free ##### -->
<para>

</para>

@category: 


