Warning: this is an htmlized version!
The original is across this link,
and the conversion rules are here.
Lua 5.1.5  Copyright (C) 1994-2012 Lua.org, PUC-Rio
> dofile "luarects.lua"
> 
> luarecteval [[
>> r = 2/  32      \
>>      |    22    |
>>      |  21  12  |
>>      |20  11  02|
>>      |  10  01  |
>>      \    00    /
>> ]]
> = r
w=2 x0=0
  32      
    22    
  21  12  
20  11  02
  10  01  
    00    
> = r:spec()    --> 12321L
12321L
> 
> luarecteval [[
>> ra, rb, rc =
>> 2/                48        \, 2/            48        \, 2/            48    \
>>  |              47  38      |   |          47  38      |   |          47  38  |
>>  |            46  37  28    |   |        46  37  28    |   |        46  37    | 
>>  |          45  36  27  18  |   |      45  36  27  18  |   |          36      |
>>  |        44  35  26  17  08|   |    44  35  26  17  08|   |        35  26    |
>>  |      43  34  25  16  07  |   |  43  34  25  16  07  |   |      34  25  16  |
>>  |    42  33  24  15  06    |   |    33  24  15  06    |   |    33  24  15  06| 
>>  |  41  32  23  14  05      |   |      23  14  05      |   |      23  14  05  |
>>  |40  31  22  13  04        |   |    22  13  04        |   |    22  13  04    |
>>  |  30  21  12  03          |   |  21  12  03          |   |  21  12  03      |
>>  |    20  11  02            |   |20  11  02            |   |20  11  02        | 
>>  |      10  01              |   |  10  01              |   |  10  01          |
>>  \        00                /   \    00                /   \    00            /
>> print(ra:spec(), rb:spec(), rc:spec())
>> --> 12345RRRR4321	123RRR45R4321	123RRR43212R1
>> ]]
12345RRRR4321	123RRR45R4321	123RRR43212R1
> 
>