Xilinx module level utilization report

 In my application, following report has been generated.
For example, the "door_sens" module have "85/85" in the slices tab, but "hdlc1" have "126/467" on the same field.

What does that mean ?

* Slices can be packed with basic elements from multiple hierarchies.
  Therefore, a slice will be counted in every hierarchical module
  that each of its packed basic elements belong to.
** For each column, there are two numbers reported a / b
a  is the number of elements that belong to that specific hierarchical module.
b  is the total number of elements from that hierarchical module and any lower level
   hierarchical modules below.
*** The LUTRAM column counts all LUTs used as memory including RAM, ROM, and shift registers.

---

Module	Partition	Slices	Slice Reg	LUTs	LUTRAM	BRAM	MULT18X18	BUFG	DCM
[-] proj_top/		897/3797	80/2859	1347/4701	0/3	0/10	0/0	2/8	0/0
door_sens		85/85	71/71	105/105	0/0	0/0	0/0	0/0	0/0
[+] hdlc1		126/467	113/464	106/652	0/0	0/2	0/0	0/0	0/0
[+] hdlc2		120/465	113/470	98/644	0/0	0/2	0/0	0/0	0/0
inp_scan		685/685	631/631	735/735	0/0	0/0	0/0	0/0	0/0
[+] uart0		118/377	112/359	103/388	0/1	0/2	0/0	0/2	0/0
[+] uart1		123/381	112/359	104/389	0/1	0/2	0/0	0/2	0/0
[+] uart2		123/384	114/361	112/397	0/1	0/2	0/0	0/2	0/0
watchdt		56/56	64/64	44/44	0/0	0/0	0/0	0/0	0/0