static void smartBot_savePrintLog(S expression, S printed) {
  File f = countTillNewFile(prepareProgramFile("printlogs/printlog"), ".txt");
  saveTextFile(f, dateWithTimeGMT() + "\n\n" + expression + "\n\n----\n\n" + printed);
  print("Saved print log: " + f2s(f));
}