diff --git a/player/dragon_ability/spelldirect_ball_lightning.arc b/player/dragon_ability/spelldirect_ball_lightning.arc
index 2a1adca21..4bf974a73 100644
--- a/player/dragon_ability/spelldirect_ball_lightning.arc
+++ b/player/dragon_ability/spelldirect_ball_lightning.arc
@@ -1,3 +1,6 @@
+# This archetype was used for dragon players' abilities. It has been replaced
+# by spell_ball_lightning. Nevertheless it cannot be deleted because existing
+# players may contain such an object.
 Object spelldirect_ball_lightning
 name ball lightning
 name_pl ball lightning
diff --git a/player/dragon_ability/spelldirect_dragonbreath.arc b/player/dragon_ability/spelldirect_dragonbreath.arc
index 1f796f2f1..c1ee596b1 100644
--- a/player/dragon_ability/spelldirect_dragonbreath.arc
+++ b/player/dragon_ability/spelldirect_dragonbreath.arc
@@ -1,3 +1,6 @@
+# This archetype was used for dragon players' abilities. It has been replaced
+# by spell_dragonbreath. Nevertheless it cannot be deleted because existing
+# players may contain such an object.
 Object spelldirect_dragonbreath
 name dragonbreath
 name_pl dragonbreath
diff --git a/player/dragon_ability/spelldirect_large_icestorm.arc b/player/dragon_ability/spelldirect_large_icestorm.arc
index dc77fd6cb..ebc1a3d34 100644
--- a/player/dragon_ability/spelldirect_large_icestorm.arc
+++ b/player/dragon_ability/spelldirect_large_icestorm.arc
@@ -1,3 +1,6 @@
+# This archetype was used for dragon players' abilities. It has been replaced
+# by spell_large_icestorm. Nevertheless it cannot be deleted because existing
+# players may contain such an object.
 Object spelldirect_large_icestorm
 name large icestorm
 name_pl large icestorm
diff --git a/player/dragon_ability/spelldirect_poison_cloud.arc b/player/dragon_ability/spelldirect_poison_cloud.arc
index eb05e32fd..a0fae9ecf 100644
--- a/player/dragon_ability/spelldirect_poison_cloud.arc
+++ b/player/dragon_ability/spelldirect_poison_cloud.arc
@@ -1,3 +1,6 @@
+# This archetype was used for dragon players' abilities. It has been replaced
+# by spell_poison_cloud. Nevertheless it cannot be deleted because existing
+# players may contain such an object.
 Object spelldirect_poison_cloud
 name poison cloud
 name_pl poison cloud