Tab-format example:

this is a tag\t this is a value\n
this is a tag2\t this is a value2\n
this is """" a tag2\t this is a """ value2\n

'=' - format examples

1)
natural=wood
source=Bing

2)
this="is=b"

3)
a=1


 b="===value==="

   c =    33                        


JSON examples:
1)

{ "a"   :    "value1"
, 
"b":"value2"
 }

2)
"a"   :    "val\"\"\"ue1"


Free-format examples
1)
a 11 b 22 
c 33 d=44 "e tag"=55


3)
 "a"="1"
"b"="2=3"	q=wert=3