Where is the "clipping planes"? I can't find it!

[kstcmcjw]

I have studied the chapter 6, about the concentric spheres, and i edit the program:

:start geometry definition:
:start geometry:
name = my_spheres # this name is up to you
library = egs_spheres
radii = 0.3 1.8 2 # three concentric spheres
:start media input:
media = default shell center # names of media 0 1 2 ...
set medium = 2 1 # set region 2 to medium 1 (shell)
set medium = 0 2 # set region 0 to medium 2 (center)
:stop media input:
:stop geometry:
simulation geometry=my_spheres
:stop geometry definition:

however, i achieve the simulation of the concentric spheres, as the figure show:

there still a question: this simulation show the clipping planes as this figure:

and the EGSnrc getting-strat.pdf show that clipping way:

my question is how to achieve the clipping planes? I can't find any useful information on the Report PIRS-898 (2019), the website is https://nrc-cnrc.github.io/EGSnrc/doc/pirs898/index.html
there is no information of "clipping planes"?

Thanks for your answer！

[rtownson]

In egs_view look in the Display tab instead of the Colors. You will see a section on the left that looks like a table. In each row here, you can enter a unit vector for the normal to the plane, and a distance from the origin. E.g. try 1 0 0 0. The 4th number is the distance.

[kstcmcjw]

在选项卡egs_view中查看Display而不是Colors. 您将在左侧看到一个看起来像表格的部分。在此处的每一行中，您可以输入平面法线的单位矢量以及距原点的距离。例如尝试1 0 0 0。第四个数字是距离。

Thank you very much, i get it !!