I'm sure I could change lineweight to something like 1 or 0.25 in SU pro but is his possible in standard SU. I thought it was changed in styles or perhaps document/page setup but i can't find it well i can't even find document setup at the mo. confused 😕

From hazy memory

Window>Styles then click the "edit" button in the Styles menu?

Its the thickness of the 'Profiles' under the edit section varies the line weight I think. Then farting about with the resolution when you export jpegs effectively varies the line weight too.