It's a BBcode specifically for the RolePlay system. It allows members to post the jutsu template in a similar way to the spoiler tag, but the title is shown at the top.
Range: Short - Long
Chakra cost: 15
Damage points: N/A
Description: This is a very advanced of advancing the ability to feel chakra. The technique allows the user to concentrate and detect someones chakra. Using these technique sensors can tell when the enemy is approaching and can easily track down targets. (Techniques activation lasts 5 turns)
Note: Can only be used by bio with sensory ability
As you can see, when you open the tag it shoes the "Jutsu Description", Rank, Range, etc. It isn't used very often though, the regular spoiler tag seems to be used more frequently.