added code to print header and planet parameter default keyword EDMT and keyword planet
minor edits
fixed the program so that it does not print the plnletter field; fixed the program so that it omits the parameter name objectid
removed some old lines of code
added code to insert the parameter value add into the file
added code to exclude two more parameter fields: rowupdate, cntr
added code to insert pipe character to the end of the file
fixed code so that it prints the word null for empty value fields