R Functions and User Interface

The following function will let you see the order of operations applied to R expressions.

addParens <- function(expression) {
   input <- match.call()$expression
   return(addParensHelper(input))
}

addParensHelper <- function(expression) {
   if (length(expression) == 1) {
      return(expression)
   } else if (expression[[1]] == '(') {
      return(expression)
   } else {
      for(i in 2:length(expression)) {
         expression[[i]] <- addParensHelper(expression[[i]])
      }
      return(substitute((x), list(x = expression)))
   }
}

Hi there,
I can't see the SEs in $output... I guess that means they are computed by summary()?
But I also don't see how to extract them programatically from the output of summary(fit)

none of these work:
x = summary(fit)
x$SE; x$standard_error; x$error_estimate

any clues?

A forum regarding reading in data

I thought that only matrices with changes (dropping/constraining parameters) have to be specified in a submodel [see line 62+ of attached script] , when the full model name is the first argument of the new mxModel command but somehow it doesn't seem to find the MZ.objective anymore. Is this a new bug? I thought this was working before.