diff --git a/src/Instrumentation/KLN89/kln89.cxx b/src/Instrumentation/KLN89/kln89.cxx
index 4387ddc19..eebf46e16 100644
--- a/src/Instrumentation/KLN89/kln89.cxx
+++ b/src/Instrumentation/KLN89/kln89.cxx
@@ -523,9 +523,15 @@ void KLN89::ClrPressed() {
 
 void KLN89::DtoPressed() {
 	if(_activePage != _dir_page) {
-		// Figure out which waypoint the dir page should display
+		// Figure out which waypoint the dir page should display, according to the following rules:
+		// 1. If the FPL 0 page is displayed AND the cursor is over one of the waypoints, display that waypoint.
+		// 2. If the NAV 4 page is displayed with the inner knob pulled out, display the waypoint highlighted in the lower RH corner of the nav page.
+		// 3. If any of APT, VOR, NDB, INT, USR or ACT pages is displayed then display the waypoint being viewed.
+		// 4. If none of the above, display the active waypoint, unless the active waypoint is the MAP of an approach and it has been flown past 
+		// (no waypoint sequence past the MAP), in which case display the first waypoint of the missed approach procedure.
+		// 5. If none of the above (i.e. no active waypoint) then display blanks.
 		if(_curPage <= 5) {
-			// Apt, Vor, Ndb, Int, Usr or Act
+			// APT, VOR, NDB, INT, USR or ACT
 			if(!_activePage->GetId().empty()) {	// Guard against no user waypoints defined
 				_dir_page->SetId(_activePage->GetId());
 			} else {
@@ -535,7 +541,6 @@ void KLN89::DtoPressed() {
 			// NAV 4
 			_dir_page->SetId(((KLN89NavPage*)_activePage)->GetNav4WpId());
 		} else if(_curPage == 7 && _activePage->GetSubPage() == 0 && _mode == KLN89_MODE_CRSR) {
-			//cout << "Checking the fpl page!\n";
 			// FPL 0
 			if(!_activePage->GetId().empty()) {
 				//cout << "Not empty!!!\n";