[Dx4win] Grid format question in packet comment fields

[Paul van der Eijk]

Hi,

I'm trying to recognize more grids like:
em40>dn70

I understand that em40 is the 'needed' grid.

But what about the following:
EM63(ES>DM81

I do not understand the meaning of the left parenthesis; does it imply 
EM63ES as the needed grid?
But I see also:
DM03(>DN30 and
IN78RI(TR>IN53RE

--Paul