How to stop a search at the end of the flow?

Rick, the nowrap property does not help to observe the 'end of flow' boundary.

No wrapping means that the find will stop if comes along the strart of the search - IMHO it is completely useless, because each Find operation moves the start location for the next search...

And yes, I need to consider the your second post. But then I need to find out where in the sequence of XRefs i'm currently. The point is: I want to insert a new XRef between exiisting ones or after the last one and hnec must compare the current location with the locations of the existing XRefs.

This needs further thoughts - maybe the whole process of 'finding my current situation' has to be reworked.

My current (working solution) is this (I will integrate function NoXRefFollows into function FindNextEnXref):

// NoXRefFollows.jsx
#target framemaker
main ();
function main () {
var oDoc = app.ActiveDoc, oTL, sXRefFmt;
  sXRefFmt = "zenref-endnote-reference"; // goFno.FmtEnRefName;
  oTL = oDoc.TextSelection.beg;
  $.writeln ("No XRef follows: " + NoXRefFollows (oDoc, oTL, sXRefFmt));
} //--- end main  
function NoXRefFollows (oDoc, oTL, sXRefFmt) {
// Arguments  oDoc      Current document
//            oTL       Curent location
//            sXrefFmt  Cross reference format of xref to endnote
// Returns    True if the current location is later than the found location, else false
// Comment    In a loop from FirstPgfInFlow to LastPgfInFlow the ¶-ID helps to compare the order
//            of the current ¶ and that of the found XREF
var ID, IDcurrent, IDfound, jPgf = 1, jThis, jFound, oPgf, oPgfEnd, oPgfStart, oPgfThis, oPgfFound, oXref;
  IDcurrent = oTL.obj.id;
  oXref = FindNextEnXref (oDoc, sXRefFmt);
  IDfound   = oXref.TextRange.beg.obj.id;
  oPgfStart = oDoc.MainFlowInDoc.FirstTextFrameInFlow.FirstPgf;
  oPgfEnd = Fno_GetLastPgfInMainFlow (oDoc);
  oPgf = oPgfStart;
  while (oPgf.ObjectValid() ) {
    if (IDcurrent == oPgf.id) {jThis = jPgf;}
    if (IDfound == oPgf.id) {jFound = jPgf;}
    oPgf = oPgf.NextPgfInFlow;
    jPgf += 1;
    if (jThis != undefined && jFound != undefined) {break}
  }
  if (jFound <= jThis) { return true;             // No XRef after the current location
  } else {return false;}
} //--- end NoXRefFollows  
function FindNextEnXref (oDoc, sXRefFmt) { //=== Find next xref to endnote ========================
// Arguments  oDoc:       Document receiving the XRef and containing the target marker
//            sXrefFmt:   Cross reference format of xref to endnote
// Returns    XRef object or null
// Called by  xxxx
// Comment    - what happens if we start beyong the last xref to an endnote?
//            - strongly depends on bookfile/single file
var k, oFindParams, oTL, oTRfound, oXRefTI;
  oTL = oDoc.TextSelection.beg;                   // current cursor location
  sXRefFmnt =  goFno.FmtEnRefName; 
  oFindParams= GetFindParameters (8, sXRefFmnt);  // find XRef forwards
  oTRfound = oDoc.Find(oTL, oFindParams);
  if (oTRfound.beg.obj.ObjectValid()) {
    oXRefTI  = oDoc.GetTextForRange (oTRfound, Constants.FTI_XRefBegin); // one 1 item in array
    for (k = 0; k < oXRefTI.length; k++) {        // k always 0 nevertheless loop necessary!
      oXRef = oXRefTI.obj;
      return oXRef;
    }  
  }
  return null;                                    // no XRefs at all in Doc
} //--- end FindNextEnXref
function Fno_GetLastPgfInMainFlow (oDoc) { // === Get the last ¶ in the main flow =================
// Arguments  oDoc    Current document
// Returns    object LastPfg in current flow
// Reference  Rick Quatro in https://forums.adobe.com/message/11169995
var textFrame;  
      
  textFrame = oDoc.MainFlowInDoc.LastTextFrameInFlow;  
  while (textFrame.ObjectValid () === 1) {  
    if (textFrame.LastPgf.ObjectValid () === 1) {  
        return textFrame.LastPgf;  
    }  
    textFrame = textFrame.PrevTextFrameInFlow;  
  }
} //--- end Fno_GetLastPgfInMainFlow  
function GetFindParameters (iType, sSearch) { //=== set up parameters for various find actions 
// Arguments iType:   what find to be performed
//                    3  Marker of type sSearch
//                    8  Cross reference sSearch forwared
//           sSearch: what to search for
// Returns   Parameters for the find method
// Called by xxx
// Reference FDK Function Reference, F_ApiFind(), https://forums.adobe.com/thread/961616
// Used in   FMcalc, FMvars, FMgraph
var findParams, propVal;
  findParams = new PropVals() ;
  switch (iType) {
    case 8: // ---------------------------------- find cross reference sSearch forwards
      propVal = new PropVal() ;  
      propVal.propIdent.num = Constants.FS_FindWrap ;  
      propVal.propVal.valType = Constants.FT_Integer;  
      propVal.propVal.ival = 0 ;                  // don't wrap
      findParams.push(propVal);  
      propVal = new PropVal() ;  
      propVal.propIdent.num = Constants.FS_FindXRefWithFormat;  
      propVal.propVal.valType = Constants.FT_String;  
      propVal.propVal.sval = sSearch;  
      findParams.push(propVal);  
      return findParams;
    default: 
      alert ("GetFindParameters: Case " + iType + " is not defined");
      return null;
  }
} //---  end GetFindParameters