[C] card:
RS2, RS2C, and RS3 calculations with very large basis sets can be performed
in integral-direct mode. The calculation will
be direct if a global DIRECT or GDIRECT card appears earlier in the input.
Alternatively, (mainly for testing) DIRECT can be specified as an option on the RS[C] card:
RS2[,G][,SHIFT=shift][,DIRECT]
RS2C[,G][,SHIFT=shift][,DIRECT]