One can now greatly customize syndicate ids. Partially based on https://github.com/ParadiseSS13/Paradise/pull/1686.

code/modules/nano/modules/human_appearance.dm

@@ -17,7 +17,7 @@
 	src.whitelist = species_whitelist
 	src.blacklist = species_blacklist
 
-/datum/nano_module/appearance_changer/Topic(ref, href_list, var/nowindow, var/datum/topic_state/state = default_state)
+/datum/nano_module/appearance_changer/Topic(ref, href_list, var/datum/topic_state/state = default_state)
 	if(..())
 		return 1
 

code/modules/nano/nanoui.dm

@@ -479,7 +479,7 @@ nanoui is used to open and update nano browser uis
 		set_map_z_level(text2num(href_list["mapZLevel"]))
 		map_update = 1
 
-	if ((src_object && src_object.Topic(href, href_list, 0, state)) || map_update)
+	if ((src_object && src_object.Topic(href, href_list, state)) || map_update)
 		nanomanager.update_uis(src_object) // update all UIs attached to src_object
 
  /**

code/modules/power/apc.dm

@@ -850,7 +850,7 @@
 			return 0
 	return 1
 
-/obj/machinery/power/apc/Topic(href, href_list, var/nowindow = 0)
+/obj/machinery/power/apc/Topic(href, href_list)
 	if(..())
 		return 1