[dwm] floating rule when only WM_NAME defined?

[Adam]

hello.  I have a program which opens a graphics display window which I
would like to always be floating.  xprop for the window returns only:

WM_STATE(WM_STATE):
                window state: Normal
                icon window: 0x0
WM_HINTS(WM_HINTS):
                Client accepts input or input focus: False
WM_NAME(STRING) = "<GREG"

I have tried using "<GREG" in every permutation possible in the rules
of config.h, but that doesnt work. Is there any other way to get such
a window to always float?

thanks,
-adam.