[gradsusr] draw "H" and "L" on isobars maps

[Christelle LACROIX]

Hello,


I would like to know if it exists a way to automatically add "H" and "L"
letters in the center of a high or low pressure system.
I habe grads version 2.0, but before i can use clhilo.f in order to add
these marks.



Thank you


CL
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