write something there

mods/skinsdb/textures/readme.txt

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+This location is where you can put your custom skins.
+
+
+List of accepted texture names
+------------------------------
+
+Public skin available for all users:
+	character.[number or name].png
+	^ The allowed characters in "[number or name]" are "[A-z0-9_.-]+".
+
+One or multiple private skins for player "[nick]":
+	player.[nick].png
+	player.[nick].[number or name].png
+
+Skin previews for public and private skins:
+	character.[number or name].preview.png
+	player.[nick].preview.png
+	player.[nick].[number or name].preview.png
+
+	Note: This is optional and overrides automatically generated preciewws.
+
+
+Legacy texture names
+--------------------
+
+The character `_` is accepted in player names, thus it is not recommended to
+use such file names. For compatibility reasons, they are still recognized.
+
+	character_[number or name].png
+	player_[nick].png
+	player_[nick]_[number or name].png
+
+... and corresponding previews that end in `_preview.png`.