The T, TL, TR, and X edit descriptors specify the position where the next character is transferred to or from a record.
On output, these descriptors do not themselves cause characters to be transferred and do not affect the length of the record. If characters are transferred to positions at or after the position specified by one of these descriptors, positions skipped and not previously filled are filled with blanks. The result is as if the entire record was initially filled with blanks.
The TR and X edit descriptors produce the same results.