null : &null
    *2	integer : 47
    *7	real : 3.14159
    *3	cset : '127'
    *9	string : "asparagus"
	procedure : procedure main
	procedure : function write
#1  *0	list : list_1(0)
#2  *0	list : list_2(0)
#3  *5	list : list_3(5)
#1  *0	set : set_1(0)
#2  *3	set : set_2(3)
#1  *0	table : table_1(0)
#2  *1	table : table_2(1)
	procedure : record constructor point
	procedure : record constructor circle
#1  *2	point : record point_1(2)
#1  *3	circle : record circle_1(3)
#2  *2	point : record point_2(2)
#3  *2	point : record point_3(2)
#2  *3	circle : record circle_2(3)
#3  *3	circle : record circle_3(3)
#2  *0	co-expression : co-expression_2(0)
#3  *10	co-expression : co-expression_3(10)
#4  *10	co-expression : co-expression_4(10)
#5  *0	co-expression : co-expression_5(0)

          x     integer(x)      real(x)   numeric(x)    string(x)      cset(x)
            0            0          0.0            0          "0"          '0'
          0.0            0          0.0          0.0        "0.0"         '.0'
          "0"            0          0.0            0          "0"          '0'
          '0'            0          0.0            0          "0"          '0'
            7            7          7.0            7          "7"          '7'
        7.315            7        7.315        7.315      "7.315"      '.1357'
      "7.315"            7        7.315        7.315      "7.315"      '.1357'
      '.1357'            0       0.1357       0.1357      ".1357"      '.1357'
      "25e-2"            0         0.25         0.25      "25e-2"       '-25e'
      "25e-1"            2          2.5          2.5      "25e-1"      '-125e'
     " 4e+3 "         4000       4000.0       4000.0     " 4e+3 "      ' +34e'
   " 3.8e3  "         3800       3800.0       3800.0   " 3.8e3  "      ' .38e'
           ""          ---          ---          ---           ""           ''
          " "          ---          ---          ---          " "          ' '
       " -3 "           -3         -3.0           -3       " -3 "        ' -3'
      "  9  "            9          9.0            9      "  9  "         ' 9'
       " +77"           77         77.0           77       " +77"        ' +7'
    "  4.7  "            4          4.7          4.7    "  4.7  "       ' .47'

"\x00\x01\x02\x03\x04\x05\x06\x07\b\t\n\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\e\x1c\x1d\x1e\x1f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\d\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\xf9\xfa\xfb\xfc\xfd\xfe"

'\x00\x01\x02\x03\x04\x05\x06\x07\b\t\n\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\e\x1c\x1d\x1e\x1f !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\d\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\xf9\xfa\xfb\xfc\xfd\xfe'