sv_pure is just a system variable (server cvar) it does not dispense candy. When turned off (0) It just allows ET to use the unpacked files you will be creating. Without that setting you wouldn't see your work when you restarted the map. Other variables don't feed back anything when you hit enter. If you are unsure they changed then type /<cvar-name> to see the cvar value and default value. I.e.;
Code:
]
]/svpure 0
]/svpure
"sv_pure" is: "0" default: is "1"
]
Ashes to Ashes Dust to Dust, We all were once Noobs and Noobs we will become.