The Windows registry is a directory which stores settings and options for the operating system for Microsoft Windows 32-bit versions and 64-bit versions.
The registry can be edited manually in Microsoft Windows by running regedit.exe or regedt32.exe in the Windows directory. However, careless registry editing can cause irreversible damage. Thus, performing backups of the registry before editing it is highly recommended.
To get into the Windows registry, click Start / Run / type regedit
When typing regedit you will get the the Registry editor. This windows looks very similar to Explorer; however, within each folder you have sub folders which have various settings.
The screenshot shows where the iMacros settings are stored:
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