From time to time I update this course by adding new material and removing irrelevant ‘words’. Please post any requests and feedback about this course. Thanks for your interest.
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@jazzy1 Thank you for this interesting course: I’ll give it a try! 
If you can’t find the course, here is the link:
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Thank you for trying this course.
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New level: Common Weather Abbreviations. This, the unabridged list of 1500+ terms you always wanted to know.
I added a level for ‘common weather abbreviations.’ It has some synonyms and I am working through marking them as such.
New level added for sectional chart airport data grouping.