Added clarifying comment in reader
@@ -836,6 +836,9 @@ vtkPLOT3DReader::ReadGrid(FILE *xyzFp)
iblank->SetName("avtGhostNodes");
iblank->SetNumberOfTuples(this->NumberOfPoints);
+ // Attempt to read the iblank data from the plot3d file. If the read failes,
+ // then the function will return 0 and we will error out. If the read passes,
+ // it will return the count that indicates how many numbers it read.
if (this->ReadIBlank(xyzFp, this->NumberOfPoints, iblank) == 0)
{
vtkErrorMacro("Encountered premature end-of-file while reading "
