""
	""
"x"
	'x'
"xx"
	"xx"
"meters"
	"meters"
'12'
	"12"
"12"
	"12"

concatenate("a", "bc", 'defg')
	"abcdefg"
concatenate("", "c", '', 'd')
	"cd"
concatenate(1,2)
	"12"
concatenate(1*2, 5)
	"1*25"
concatenate(1+2, 5)
	"1+25"

len("")
	0
len(" ")
	1
len(5)
	1
len(5/6)
	3
len(concatenate("a", "bc"))
	3

/set unicode 1
0xD8 to unicode
	Ø
char(0xD8)
	'Ø'
char([0xD8, 0x61])
	['Ø'  'a']
code(Ø) to hex
	0xD8
code(😀) to hex
	0x1F600
code(🍉, utf-8, 0) to hex
	0xF09F8D89
code(abc)
	[97  98  99]
