create_dgf(
df,
vtypes = NULL,
use.df.types = FALSE,
guess.factors = TRUE,
guess.dates = FALSE,
dd = NULL,
vname = NULL,
vlabel = NULL,
vdesc = NULL,
vtype = NULL,
vconvert = NULL,
vformat = NULL,
vname_alias = NULL,
keep.dd.cols = NULL,
preview_dd = F,
preview_dp = F,
file = "DGF"
)