concept G22TravelLogEntry {
  S computerID;
  S computerDescription;
  Timestamp timestamp;
  S gazelleCompilationDate;
  File projectDir;
  long projectSize;
  int fileCount;
  int conceptCount;
  long highestConceptID;
  Timestamp lastConceptChange;
  Timestamp lastFileChange;
  File importedFrom; // e.g. a local zip file that was downloaded
  S comment;
}