Change file type from "binary" to "ascii"

[joes]

Hello

I would like to change a file back from binary to ascii. How can this
be achieved? According the documentation I tried it with the follwoin
commands. Unfortuantely it seems not to be accepted. Any ideas?

I tried:

cvs update -kt myfile
cvs admin -kt myfile

Error Message:

cvs update: invalid RCS keyword expansion mode
Valid expansion modes include:
   -kkv Generate keywords using the default form.
   -kkvl        Like -kkv, except locker's name inserted.
   -kk  Generate only keyword names in keyword strings.
   -kv  Generate only keyword values in keyword strings.
   -ko  Generate the old keyword string (no changes from checked in
file).
   -kb  Generate binary file unmodified (merges not allowed) (RCS 5.7).
(Specify the --help global option for a list of other help options)

many thanks 

best regards
Mark Egloff