Final answer:
The proper marking for a khaki tie includes a horizontal cleft and an indication of a tied belt that hangs down, as seen on the back of a figure or uniform.
Step-by-step explanation:
The proper marking for the khaki tie, as described, seems to indicate a special feature on a figure or uniform where the tie is depicted. The marking talked about is a cleft carved in horizontally on the back of a figure, together with what looks like a belt tied and hanging down. This horizontal cleft may be where the tie is meant to lie flat against the body or suggest the appearance of the tie being tucked in at the back. The specific placement for such a marking can vary depending on the type of figure or dress code being represented.