There's a free text editor out there called Visual Studio Code that works on Mac and Windows. I use it at work for software development. It tries to not be too big or complicated.
After I found and installed the Extension ink language from the marketplace I found that writing was easier:
* Syntax highlighting - The ink language has a few key words and symbols. Having them show up in different colors is so good.
* Syntax checking - If I misspell a knot, divert, etc. then it shows up with a red squiggle just like a misspelled word in Word. That makes it easier to track down what I did wrong. Especially since I get them as I type.
* Missing syntax - I also get red squiggles when I didn't add a divert or something. I love that it tells me I need more code stuff. I can trust the text editor to be watching that so I can focus on the prose.

https://code.visualstudio.com/download
https://marketplace.visualstudio.com/items?itemName=drincs-productions.pixi-vn-ink-vscode
After I found and installed the Extension ink language from the marketplace I found that writing was easier:
* Syntax highlighting - The ink language has a few key words and symbols. Having them show up in different colors is so good.
* Syntax checking - If I misspell a knot, divert, etc. then it shows up with a red squiggle just like a misspelled word in Word. That makes it easier to track down what I did wrong. Especially since I get them as I type.
* Missing syntax - I also get red squiggles when I didn't add a divert or something. I love that it tells me I need more code stuff. I can trust the text editor to be watching that so I can focus on the prose.

https://code.visualstudio.com/download
https://marketplace.visualstudio.com/items?itemName=drincs-productions.pixi-vn-ink-vscode