Warning: Do not expect the input to be logic. The programers logic
may be different from yours.
Warning: This input description may not refer to the actual version
of the program you are using. Therefore the ultimate and authoritative input
guide is the source code.
Most of the input can be found in the files control.f, ratom.f, recpnew.f,
sysin.f, and dftin.f.
The input is free format except were especially stated. Lines that do not match a keyword are treated as comments. The order of the keywords is arbitrary except were especially stated. Only keywords with capital letters match. Lists inclosed in { } imply that you have to choose exactly one of the items. Lists inclosed in [ ] imply that you can choose any number of items on the same line. The full keyword has to be within columns 1 to 80. Keywords typed in slanted style are not fully tested and their use is on your own risk.