parallel lines

[Dollmen]

hai all, i need to know how to make parallel curve lines like the attached files

this i an artistic nib

[Claudio González]

Absolutely no way to tell without knowing the specific  program you are using.

[Dollmen]

you're right, sorry, illustrator CC

thanks

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[Doug A Roberts · Accepted solution]

one way: create a straight line with a tapering width profile. duplicate it a few times. drag to the brushes palette, create an art brush:

[Dollmen]

Thanks!