https://en.m.wikipedia.org/wiki/C0_and_C1_control_codes#Field_separators https://en.m.wikipedia.org/wiki/C0_and_C1_control_codes#Fiel... The problem is that an

https://en.m.wikipedia.org/wiki/C0_and_C1_control_codes#Field_separators https://en.m.wikipedia.org/wiki/C0_and_C1_control_codes#Fiel... The problem is that any delimiter that has no chance of appearing in actual text will be hard to discover, and cannot appear on a standard keyboard (so it is not easily human-writable). So we are kind of stuck with the comma for human readable formats.