Another tidbit worth explaining is that, while Total Commander for Android is free to use and contains no ads, its Play Store ...

Using plug-insand external utilities, Total Commander can work with any number ofadditional archive formats, such as the excellent 7-Zip format.

Using plug-ins and external utilities, Total Commander can work with any number of additional archive formats, such as the excellent 7-Zip format.

Apparently, I could re-mount partitions as read-write in Total Commander all along, and now I'm passing this knowledge to you.