>Every time I set up a form, I have to go into each field manually and change the tag. I reckon there must be a better way...maybe using a builder but I have never used these .

You can use ASelObj() to do Low Key builder type stuff right from the command window, from there, you can use methods like SetAll()

*With your form in the designer and an object selected
aselobj(aObj, 1)
aObj(1).SetAll('tag', 'whatever', 'textbox')