"Quick Accent" pop-up tool for entering special characters such as "à"

[pugly-tech]

Windows has a PowerToy Called Quick Accent that pops up an inline window for choosing variations of a letter
https://learn.microsoft.com/en-gb/windows/powertoys/quick-accent

Activate by holding the key for the character you want to add an accent to, then (while held down) press the activation key (Space key or Left / Right arrow keys). If you continue to hold, an overlay to choose the accented character will appear.
For example: If you want "à", press and hold A and press Space.
With the dialog enabled, keep pressing your activation key.

It would be a really convenient tool and would be easy to use and understand, I'm not sure which part of Cinnamon it would need to be integrated into

[Secret-chest]

The compose key exists; it would be really nice to have a GUI for it so you can also know which characters you can compose without trial and error or reading the lists.

[0hCome0n]

If you are unaware, OP, you can go into the keyboard options and make one of your keys the "compose" key. Then, when you want to type an accent you hit compose, then the letter, then the symbol you would use to modify the letter to create the accent mark.

E.G. compose --> a --> ' = á

[Jopp-gh]

Nice toy! Since we're in 2026, I'd expect more polish of this kind. Via terminal you can do much more, but most commands don't have a graphical user interface.

One thing that ALL software do wrong:
To supply small examples how to use software.

Man entries are a good example, but generally don't explain anything

Well, if applications would ship help pages structured in keywords and minimalistic explanation how to archive things (without going into sentences) then interested users would be more motivated do research and learn how to use tools.

[Secret-chest]

I agree, we need more manuals and maybe even optional notifications which would appear once to tell you a more efficient way to do something.