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Latest revision as of 03:41, 29 January 2014
Diagrams frequently asked questions.
 1 Miscellaneous
 1.1 Can I render a diagram to the screen and then know which part of the diagram a user has clicked on?
Yes. See the user manual section on using queries.
It seems this can be caused on OS X by a mixture of 32- and 64-bit libraries. For example see this bug report. Ensure that your GHC and your gtk libraries are either both 32-bit or both 64-bit.
 2 Error messages
 2.1 Couldn't match type `V (Point R2)' with `R2'
This is due to a bug in GHC. As a workaround, you can simply add the import
to your file. See also the user manual.