The Jsp editor, (for the Net Beans 6.0 M9 version), doesn`t check all errors like the Java error check editor, specially
the sintatical errors.
 For example, when you are going to take out something by screen, and you haven`t realized that you have removed one of
the inverted  commas, it doesn't appear the red cross that shows an error beside of the code. The same happens if you
erase one of reserved simbols or characters, like  '%' of <% or if you have declared a variable and later you use it in
your code but with some sintactical error. The error check of the JSP editor doesn´t remind you that you have a mistake
in that line. These are only some errors.  

Definitively, I think that you must to improve the JSP error check (also the Javascript error check editor, because it
has the same errors that the JSP error check editor), to put these editor at same level of Java error check editor,
which is fantastic.

By the rest, i want to give you my congratulations for the developing  this great IDE, that i think is the best of the
world.