hi i am new to Linux Journal
as i had upgraded
elx kernel-2.4.xx->2.6.22(what a speed on 256MB RAM)
and on menuconfig i watched Selinux and PAE(physical address extension)
can any one tell me what is both the thing
PAE and SE linux(Please Answer me in a way so that 17 year old boy can understand like me)

//if()action;else(substitute;)