ss='st'>"AIC"</span>, <span class='st'>"BIC"</span>, <span class='st'>"Entropy"</span><span class='op'>)</span>,
  timevar <span class='op'>=</span> <span class='st'>"variable"</span>,
  idvar <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"Type"</span>, <span class='st'>"cov"</span>, <span class='st'>"k"</span><span class='op'>)</span>,
  direction <span class='op'>=</span> <span class='st'>"long"</span><span class='o