dired with dot files early

[Robert J. Chassell]

Currently, my dired displays dot files among all the rest.

I have looked in lisp/dired.el and at the man page for ls;
unfortunately, I could not find a way to put the dot files in ASCII
order as they were several years ago.  

Thus, in dired, my home directory shows `calc-language-modes' before
`.calcrc'.  Perhaps an appropriate variable does not exist; or ...

What variable can I set in my initialization file so dot files in
dired come early in the listing, all together?

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    address@hidden                         address@hidden
    http://www.rattlesnake.com                  http://www.teak.cc