The contents of ftppd are as follows:-
build - example build file for the ftp handler
cons - source of the ftp table constructor
consy - object of the above
cons1y - object of the grammar contructor
doc - some documentation (covering theory only as of 4.4.83)
obj - object of the ftp program
source - source of above
table - source of the table specifying ftp

To build a new ftp handler:-
1.insert ftppd_consy and ftppd_cons1y
2.ftpcons ftppd_table/tableobject,tablelist
3.edit tableobject into ftppd_source replacing arrays token, next,
   action and value
4.follow scheme of commands in ftppd_build

Best of luck - Noel