static L<SnippetVersion> versionsOfSnippetWithText(S snippetID) {
  ret versionsOfSnippetWithText(getVersionsOfSnippet(snippetID));

}

static L<SnippetVersion> versionsOfSnippetWithText(L<SnippetVersion> versions) {
  for (SnippetVersion v : versions)
    if (v.versionID != 0)
      v.previousValue = loadPage(tb_mainServer() + "/tb/get-version.php?id=" + psI(v.snippetID) + "&v_id=" + v.versionID + standardCredentials());
  ret versions;
}