Is there a (writer's) text editor with alternative strings added?

Question

Text editors

You need a text editor with the ability to enter several options for any piece of text, both single-line and multi-line.
Moreover, it should be possible to turn off the display of all alternatives and leave only the working version, but if necessary, view all alternatives, add new ones, or select any alternative as the working version.
It is desirable that all this be with any nesting depth, that is, it should be possible to produce alternatives of text fragments inside another alternative.
The platform will go both Windows and Linux, but it would be generally good if it were a multiplatform.