Click the Export or Import buttons to export or import macros. Macros exported to a file can be imported via the import dialog into another eclipse (with the Practically Macro plugins installed, as well as any required plugins/commands). Macros with ids that already exist in the current Eclipse will be skipped (i.e. they will not replace the current command with that ID). Also, from the export dialog you can copy the XML from the text box and put that directly into a plugin.xml definition with the following extension point:
include the text from the export page here
When exporting to a file, you can export one macro or a set of macros to the same file. If a macro uses other macros you have defined, you should export them all together.