"So, are you in a piper band or something?"

[davedove]

Interesting. I'd understood the one on the left as "pleating to the line," and the one on the right as "pleating to the sett."

I don't recall having seen "pleated to the tartan" before.

It makes sense though. The tartan is the pattern and pleating to set maintains the pattern, thus pleating to tartan. It's just not the term commmonly used.

[Caradoc]

It makes sense though. The tartan is the pattern and pleating to set maintains the pattern, thus pleating to tartan. It's just not the term commmonly used.

It still doesn't make any sense, because they're claiming that pleating to the sett and pleating to the tartan are two different things.

[davedove]

It still doesn't make any sense, because they're claiming that pleating to the sett and pleating to the tartan are two different things.

You're right. I looked again and it seems what they are calling pleated to tartan is really to the stripe.