Tesseract Training using basic characters only

[James Q]

The text I want Tesseract to read will only contain the most basic characters. Is there a way of finetuning it therefore so as to only include basic upper/lower case letters, digits and punctuation marks? That way I could avoid 'c' getting misinterpreted as '¢' etc.? Would simply passing in a new 'training_text' and 'wordlist' into tesstrain.sh achieve this?

Thanks

James