yl_speak_up.input_fs_edit_effects = function(player, formname, fields)
	if(not(player)) then
		return
	end
	local pname = player:get_player_name()
	-- what are we talking about?
	local n_id = yl_speak_up.speak_to[pname].n_id
	local d_id = yl_speak_up.speak_to[pname].d_id
	local o_id = yl_speak_up.speak_to[pname].o_id

	-- this only works in edit mode
	if(not(n_id) or yl_speak_up.edit_mode[pname] ~= n_id) then
		return
	end

	-- go back to the edit option dialog
	yl_speak_up.show_fs(player, "edit_option_dialog",
		{n_id = n_id, d_id = d_id, o_id = o_id, caller="edit_effects"})
end

yl_speak_up.get_fs_edit_effects = function(player, table_click_result)
	if(not(player) or not(table_click_result)) then
		return ""
	end
	local pname = player:get_player_name()
	-- what are we talking about?
	local n_id = yl_speak_up.speak_to[pname].n_id
	local d_id = yl_speak_up.speak_to[pname].d_id
	local o_id = yl_speak_up.speak_to[pname].o_id

	-- this only works in edit mode
	if(not(n_id) or yl_speak_up.edit_mode[pname] ~= n_id) then
		return "size[1,1]label[0,0;You cannot edit this NPC.]"
	end

	local dialog = yl_speak_up.speak_to[pname].dialog
	if(not(dialog) or not(dialog.n_dialogs)
	  or not(dialog.n_dialogs[d_id])
	  or not(dialog.n_dialogs[d_id].d_options)
	  or not(dialog.n_dialogs[d_id].d_options[o_id])) then
		return "size[4,1]label[0,0;Dialog option does not exist.]"
	end

	local results = dialog.n_dialogs[d_id].d_options[o_id].o_results
	if(not(results)) then
		results = {}
	end
	-- which precondition has the player selected?
	local sorted_key_list = yl_speak_up.sort_keys(results)
	local selected = minetest.explode_table_event(table_click_result)
	-- use "new" if nothing fits
	local r_id = "new"
	if((selected.type == "CHG" or selected.type == "DLC")
	  and selected.row <= #sorted_key_list) then
		r_id = sorted_key_list[ selected.row ]
	end

	minetest.chat_send_player("singleplayer","input: "..minetest.serialize(table_click_result))
	return "size[4,1.5]label[0,0;Formspec: edit effect\n-> "..tostring(r_id).."]"..
		"button[1,1.0;1,1.0;back;Back]"
end