Tutorial is confusing me

http://s3-ap-northeast-1.amazonaws.com/bc2prod/rpgmaker-20130522223546811/files/RPGMakerVXAceTutorial4.pdf

On page 10, towards the bottom of the page, it says:

The Features of the Lightning Bladeis shown below:

And it shows a Feature with Ex-Parameter of [Hit] + 0%

What are the ramifications of this?  In my head that's just adding 0% to the parameter, which would be the same as not having that feature on the weapon at all.  Is there something I'm not understanding?

Also, what does Ex-parameter, and Sp-parameter stand for?

you are correct, that is simply a typo in the screenshot - adding HIT +0% doesn't change anything.


Some people like to make base items/weapons/armors that include placeholders for later effects (like when you make a series of weapons, the first starting with +0%, the second +3%, the third +5% or something like this), just to make sure that they don't forget something and to make the item better readable when scrolling through them.


Parameter, Ex-Parameter (Extra) and Sp-Parameter (Special) are just names to group several different parameters together.


There are minor differences in handling (some are +x%, others are *x%, and some default to 0% while others default to 100%), but basically the difference is that different forms of parameters affect different parts of the engine - look in the help file for a complete description what each parameter does.