ColPermsDescriptor colPerms = (ColPermsDescriptor) perm;
FormatableBitSet existingColSet = (FormatableBitSet) row.getColumn( COLUMNS_COL_NUM).getObject();
FormatableBitSet newColSet = colPerms.getColumns();
boolean changed = false;
for( int i = newColSet.anySetBit(); i >= 0; i = newColSet.anySetBit(i))
{
if( ! existingColSet.get(i))
{
existingColSet.set( i);
changed = true;