Master Skills (?)

Is this going new or already exist in-game?
Code:
<category name="seafight.labels.MasterSkills">
<item name="1">
<![CDATA[ Brutal Blaster ]]>
</item>
<item name="2">
<![CDATA[ Rocket Rampage ]]>
</item>
<item name="3">
<![CDATA[ Locked 'n' Loaded ]]>
</item>
<item name="4">
<![CDATA[ Tough Nut ]]>
</item>
<item name="5">
<![CDATA[ On Reflection ]]>
</item>
<item name="6">
<![CDATA[ Vooddo Hoodoo ]]>
</item>
<item name="7">
<![CDATA[ El Dorado ]]>
</item>
<item name="8">
<![CDATA[ Squids In ]]>
</item>
<item name="9">
<![CDATA[ Elite Dangerous ]]>
</item>
</category>
<category name="seafight.labels.SkillSheets">
<item name="1">
<![CDATA[ ?? ]]>
</item>
<item name="2">
<![CDATA[ ?? ]]>
</item>
<item name="3">
<![CDATA[ ?? ]]>
</item>
</category>