character(len=6) :: md_extrap

The extrapolation scheme to use for wavefunction, and charge density if using density mixing, during molecular dynamics, including damped MD. The options are:

-

None - No extrapolation used.

-

First - First order extrapolation.

-

Second - Second order extrapolation.

-

Mixed - Alternating first and second order extrapolation.

The default value of this parameter is `First'.