Draw hook rebar.

 
  File name : HOOK.LSP

  Example-1  90 Degree Hook
    Radius: 300                [Enter Radius]
    Length: 300                [Enter length of straight part]
    90 180 <90>:               [choose 90 Degree or 180 degree, in this case, choose default 90 degree]
    Select LINE: {p1}           [Select a line]
    Pick end point: {p2}        [Pick side point(up or down)]
    Pick side point: {p3}       [Pick hook side(left or right)] 


    
  Example-2  180 Degree Hook
    Radius: 300                [Enter Radius]
    Length: 200                [Enter length of straight part]
    90 180 <90>: 180   [choose 90 Degree or 180 degree, in this case, choose 180 degree]
    Select LINE: {p1}           [Select a line]
    Pick end point: [p2}        [Pick side point(up or down)]
    Pick side point: {p3}       [Pick hook side(left or right)]