is a global object that is assigned to be the text of the n input line.
- InString[n] gives the string that the Wolfram Language read for the n input line. The string includes all intermediate newlines in the input, but not the newline at the end.
- The value of InString[n] is assigned after the input is verified to be syntactically correct, and after any function given as the value of $PreRead has been applied.
- InString gives the text of the last input line.
- InString[-k] gives the text of the input k lines back.
Introduced in 1991