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If you want to edit THM file and not damage it, you should install dedicated software Using tools such as THM Online Editors gives less editing possibilities than software adapted to work with the THM file format.
Please note that not every program that supports THM will allow you to edit the file. If you want, you can learn more about the THM file extension.
This is definitely the surest way. Try to open the THM file with one of the programs and it will see if you can edit the THM file. It's safest to download the software from the developer's website. You will find links to the software developers' websites on the subpage of each program. List of sample programs supporting the THM file below.
The full list of THM supporters
Most of the file formats are simply text format saved under a different extension - so you can open them e.g. with Windows Notepad But beware - making manual changes to the THM file or another may result in its damage. If you make inappropriate changes and save the file, it may happen that you do not reopen the THM file.. By far the safest way is to use file editing programs that works with the THM extension.
It is actually certain that one of the applications working with files in the THM format will be able to edit the file. However, if for some reason you did not find this option, you can try using tools prepared by external websites. Verified websites with the option to edit the file in the THM format below.
Free Online File Edit Service
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