program to detect cheat?

What program was used to detect the cheat.
Can I control the player such a program or just the admin server is a possibility?
https://www.youtube.com/watch?v=0ZLw2d3lv4c

That's just a command. When you make a demo of someone and watch it again you can see through walls like that with /r_shownormals 1
The command only works when NoGhost is turned off and only when you watch a demo (or if you are on a cheat enabled server).
/r_shownormals 1 is often used to detect wallhack because you can see trough walls too.

Thx Para I did not know that it's so simple.
I have another question, I wrote a list of commands to my cfg (bind F11 "sv_fps 40; g_synchronousclients 1, record demo") to have the opportunity to record a demo, but when i press the bind button the console displays this message:
The server must have g_synchronousclients 1 'set for demos
unknown cmd g_synchronousclients

Do you known how to record demos?

Here is pretty much everything You need to know http://www.quake3world.com/forum/viewtopic.php?f=7&t=3450

In 1.16 You write g_syncronousclients, not g_synchronousclients (this in for pr 1.27 and newer). The easiest way is to just write g_sy and press tab.
Here is that bind script from that site for starting and stoping record with one button for PR 1.16

bind x "vstr rec"
set rec "vstr first_rec"
set first_rec "g_syncronousclients 1;wait;record;wait;g_syncronousclients 0;set rec vstr second_rec"
set second_rec "stoprecord; set rec vstr first_rec"

It works.

You my man Booones. Thank you very much