Final answer:
ATRs are limited to 100 pages in length with 60 lines per page.
Step-by-step explanation:
ATRs, or Automatic Terminal Recognition, are limited to 100 pages in length with 60 lines per page. ATRs are used in computer programming to detect the end of a record or data set in a file. The size of an ATR is predetermined and serves as a marker for the end of a record.