section view

Hi,

today i am doing the drawing of my 3D model and i have some difficulties with a section view, my assembly includes ball bearings and circlips and i would like to make a section view which would show how i did the conception of the fixation.

I did :

- a projection view

- a section view this projection view showing de middle of the assembly

Here are my problems :

     -i would like not to show will all the details the ball bearings because this is polluting my drawing

     -i would like to modify the hatch style of each part of the assembly

     -i would like to hide everything beyond the section plane (finer lines appears on my section view, how do i erase them ?

I also accept tips to let my drawing more readable !

     - i would like to know how to include tolerance like "5 +/-0.1" ou "5 +0-0.1" (as an exponant)