I'm new to Deplhi can anyone tell me what is meaning of code place below and what does it return:

SetRangeStart;
FieldByName('TYPE').AsString := 'SIZE';
FieldByName('NAME').AsString := '';
SetRangeEnd;
FieldByName('TYPE').AsString := 'SIZE';
FieldByName('NAME').AsString := '~';
ApplyRange;

Basially what is the '~' meaning here in the Code.Please any one can help.

Thanks.