the meaning of "i"

febty febriani <[email protected]>
Newsgroups gmane.comp.gis.gmt.user
Message-ID <CAPdicTv9VoNzRFRtA_B7NA=c=vzQ-BSw0WGD9=Qf2H95S9SgLw@mail.gmail.com> 
Dear all,

It is maybe the simple question for you, however it makes me a little
confused. What is the meaning of "i" in some sample of scale in GMT? For
example for pslegend below :

S 0.1i c 0.06i - 0.25p 0.3i M 3


What is the meaning of "i" after 0.06 as well as 0.3?



Thanks very much.

Best regards,

Febty

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