This completes
#32, which has been closed.
There are two ways to access these commands:
1. Using the general import-files command, via the minibuffer or the File:Import File menu. This opens a dialog that picks the proper importer
based on the file's extension. mm.html files get the FreeMind importer. csv files get the MindJet importer.
2. If these conventions don't suit you, you can use specific import-free-mind-files or import-mind-jet-files commands. These open a dialog in which the specific extension is pre-selected, but you can pick any file as usual. In particular, it's possible to use the MindJet importer to open .ipynb files, which have .csv format.
In general, if you pick an invalid file, the importers will fail gracefully.
Please report any problems.
Edward