[Coco] BASIC syntax in GWBASIC

[Jones, Orville CPT]

In one of my ham radio programs I am converting from GWBASIC I am getting a
syntax error for this line of code:

1080 P=3.14159265#

I am making this program CoCo compatible. I don't have any docs on gwbasic.
What does the "#" do in GWBASIC? I course I could just delete the # but I am
assuming that the # somehow makes the value of pi more accurate.

--O. Alan