I derive a lot of benefit from mind-mapping in the style shown below. I usually do this in .txt files. But is there some generally accepted text file extension specifically for monospace art?
┌──────────────────┐
┌┤ Current Projects ├─────────┐ ┌─────────────────────────────────────────────────────────────────────┐
│└──────────────────┘ ├─┘ ┌──────────────────┐ │
│ │ │ Possessions List │────────────┐ │
│ □ Forever Park │ └──────────────────┘ │ ┌──────────────┐ │
│ └────────────── │ │ │ ┌┤ Forever Park ├────────────┐ │
│ │ │ ░ Some reboxing would be │ │└──────────────┘ │ │
│ □ Possessions List │ │ ░ nice │ │ │ │
│ └─────────────────── │ │ │ │ ░ Not much. Just keep │ │
│ │ └──────────────────────────────┘ │ ░ plugging away at that │ │
│ □ Healthcare Application │ ┌────────────────────────┐ │ ░ outline. │ │
│ └───────────────────────── │ │ Healthcare Application │───────┐ │ │ │
│ │ └────────────────────────┘ │ └────────────────────────────┘ │
│ □ Tapstry Map │ │ │ │
│ └────────────── │ │ ░ Previous healthcare expires │ │
│ │ │ ░ Sunday, April 30th │ │
└┬────────────────────────────┘ │ │ │
┌┘ └───────────────────────────────┘ │
│ │
│ ┌─────────────┐ │
│ ┌┤ Tapstry Map ├─────────────────────────────────────────┐ │
│ │└─────────────┘ │ │
│ │ │ │
│ │ Explore: │ │
│ │ │ │
│ │ ░ line endpoints │ │
│ │ ░ text box wrapping │ │
│ │ ░ google sheets and csv files with real datasets │ │
│ │ ░ d3 pointer events so I can see mouse coordinates │ │
│ │ │ │
│ └────────────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────────────────────────────────────┘
I have found part of the answer to my question: it’s not a major mode, but the minor mode
picture-modeis a necessary component in what I’m trying to accomplish. It has special commands like, “fill selected region with spaces” and its SPC and BACKSPACE keys now move across the text, replacing everything in their path with whitespace.Finding this was a really good first step.