Predictive text

I am writing a system for keying in names. I already have a large datafile of existing names. I was wondering if there is a Clearwin+ command that will append to the existing characters already keyed in the next available entry in my lookup table - but show the remaining characters in say, grey. Just like how predictive text works on mobile phones.

Is there such a command or have I to set up a more sophisticated method such as setting up and analysing an edit box ?

No. There is no such command.