It would be very convenient if Pmw.EntryField can be made
to treat moving away from an entry field (as in tabbing or
clicking on another field) the same as pressing <enter>.
The rationale is that the user sees the newly typed input in
the box, but the application may not have acted upon it in
the same way as if <return> were entered. As it is, there
can be a little confusion since inputs where <return> has
been typed look pretty much the same as inputs that were
just left there without typing <return>.