>trace()
#1[r1,l1] Object {
  #4[r1,l0] Name: '>timers'  #5[r2,l0] Array [
  ]
  #6[r1,l0] Name: '>watches'  #7[r2,l0] Array [
  ]
}
=undefined
>process.memory()
={"free":1987," ..........
>trace()         
#1[r1,l1] Object {
  #4[r1,l0] Name: '>timers'  #5[r2,l0] Array [
  ]
  #6[r1,l0] Name: '>watches'  #7[r2,l0] Array [
  ]
  #9[r1,l0] Name: '>history'  #10[r1,l0] Array [
    #11[r1,l0] Name: int 0  #8[r1,l0] String trace()
    #40[r1,l0] Name: int 1  #13[r1,l0] String process.memory()
  ]
  #15[r1,l0] Name: 'process'  #12[r1,l0] Function {
  }
}