Hi Psygorn, the command name is defined by the file name of the .js and .htm files. If the file name starts with a _ character then the command name will also start with a _ character.

If the file name does not start with a _ character, then also the command name will not have a _ character.

The command name just matches the file name whatever it has in it.

I think the underscore ones were created by Max Smirnov, it was a naming convention he used to separate them from built in commands or something like that.

- Michael