Thanks ginge and gazzar.
I copied and pasted the link and it worked. Showing me how symbol in 3a can be called symbol in 5d.
19d, I saw the first 4 letters but cannot see the last two. Or I can see the last but not second last.
I thought every clue with the answer that does not require a symbol to be entered in the grid (such as 3a or 5d) also had to have a symbol in the word play.
Such as 24a.
But parsing does not always tell me how. I have 4 letters for 30a which is to do with police in another country. Same thing with 28a. I have pictures as in art in a gallery. But have not parsed it yet.
Is there a place where all the possible Marks are listed?
For example , a "." can be dot, period, stop, point etc.
A # can be H??? and H????.
Will look at 18a soon.