[Groff] More arguments, please :-)

[Miklos Somogyi]

I've just discovered the `blm' macro. I think that I'll use it like 
this:

.blm sp4

.de sp4
.sp .4
..

'cause I can read thing better with blank lines than with individual 
`.sp .4` inserts.
Here blm has an argument, a macro. If the macro could have an argument 
too:

.blm macro macro_parameter

then it would be absolutely easy to adjust the bottom of the page to go 
down right to
the margin. Perhaps the whole thing could be automated.

Is there a way to make an offer to blm that it can't refusei, to accept 
one more argument?
Is this adjustment thing I am dreaming about already solved in any 
other way?

Miklos