[gradsusr] very basic question about control files

[Namrata Kala]

Apologies for the very fundamental question. I'm new to grads and have
spent quite a while on tutorials but couldn't find the answer to these
questions:

i) Can I write a ctl file using wordpad?
ii) If so, how do I save it such that grads recognizes it as a ctl file and
I can type
"open controlfilename.ctl" into grads to open the associated data?
ii) If not, can anyone please what software I can use to write a ctil file?

Thanks so much,
Namrata
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