[gdal-dev] WKT user data

[Even Rouault]

Hi,
> What is the formal way for storing a user data section into a WKT ?

Not completely sure what you've in mind, and assuming you speak about 
WKT CRS, probably using the REMARK[] optional node. See 
http://docs.opengeospatial.org/is/18-010r7/18-010r7.html#38 (there are 
other examples using REMARK[] throughout the document)

Even

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