static O readPersistentVarFromOtherProgram(S progID, S variableName) ctex {
  bool allDynamic = false;
  File textFile = programFile(progID, variableName + ".text");
  S value = loadTextFile(textFile);
  if (value != null) ret value;
  File structureFile = programFile(progID, variableName + ".structure");
  value = loadTextFile(structureFile);
      
  if (nempty(value))
    ret allDynamic ? safeUnstructure(value) : unstructure(value);
    
  File structureGZFile = programFile(progID, variableName + ".structure.gz");
  if (!structureGZFile.isFile()) null;
  InputStream fis = new FileInputStream(structureGZFile);
  try {
    GZIPInputStream gis = newGZIPInputStream(fis);
    InputStreamReader reader = new InputStreamReader(gis, "UTF-8");
    BufferedReader bufferedReader = new BufferedReader(reader);
    ret unstructure_tok(javaTokC_noMLS_onReader(bufferedReader), allDynamic, null);
  } finally {
    fis.close();
  }
}