:memo: Explain two show parameters.

godot/addons/slide_show/projector/show/Show.gd

@@ -8,8 +8,8 @@ signal end_reached
 const VOID_SLIDE_ID := -1
 
 @export_group("Slide management")
-@export var start_slide := 0
-@export var hide_slides := false
+@export var start_slide := 0 ## Id of the slide focused at startup
+@export var hide_slides := false ## Hide every slide at startup (except the ones with always_visible enabled)
 
 @export_group("Input setup", "action_")
 @export var action_finish_slide := "ui_accept"