# change definition of `inp_edit_category` element in `/core/admin_templates/incs/form_blocks.tpl` file by adding `pass_through='test' test='testvalue'` to call of `adm_SelectorLink` tag
# go to {nav Website & Content > Structure & Data} and open some category for editing
# open browser developer tools to see HTTP queries
# click on the icon of `Point to Section` field
# navigate into some category and back
# confirm, that `test=testvalue` exists in ajax request urls