Hello Peter,
Sorry - I described the symptoms wrongly.
The misbehaving topic will build into WebHelp OK, but it
doesn't build into CHM or Word doc layouts.
I have just discovered that, in the CHM output, the structure
of book, sub-books that contain the errant topic is wrong; it does
not go down to 3 levels, only 2 levels. WebHelp has the output
corrrect 3 levels.
Build tag expressions are dientical for CHM and WebHelp.
For Word doc output, I've tried using the << and
>> buttons, but it makes no difference; the topic I want is
missing from the left-hand pane, so I cannot transfer it to the
right-hand pane.
Puzzled.