Most programs3.4in NEMO will automatically keep track of the history of their data-files in a self-describing and self-documenting way. If a program modifies an input file and produces an output file, it will prepend the command-line with which it was invoked to its data history. The data history is normally located at the beginning of a data file. Comments entered using the frequently used program keyword headline= will also appear in the history section of your data file.
A utility, hisf can be used to display the history of a data-file. This utility can also be used to create a pure history file (without any data) by using the optional out= and text= keywords. Of course tsf could also be used by scanning its output for the string History or Headline:
5% tsf r001.dat | grep History
which shows that tsf, together with it's counterpart rsf has virtually the same functionality as hisf. 3.5