It could happen that you accidentally type your password in the user name area.
If you type your user name again, your password is also shown in the Auto-Complete List.
You can remove those lines:
Type in the letters until the line shows witch you want to remove.
Hover the mouse over that line BUT DO NOT CLICK.
See below.
Hold down <Shift> and press <Del>.
The line has been removed.

When this happens the files appear twice.
It looks like this:
Scheme.doc
Scheme - copy.doc
If this accidentally happened with a lot of files, you should select them alternately one by one. That's a lot of work. You can sort the files so, that the copied files are together.
Note: In Dutch it is 'Aanmaakdatum'. I'm not sure if 'Creation date' is the correct translation.
Now the files are ordered so, that the copied files are close together and easier to select. If you want to check them, you can copy them to an empty directory.

Below are some settings I had to look up every time.
I've written them down; maybe you'll find them useful too.
And some information.
Set pointer speed:
Settings | General | Trackpad & mouse (only if a mouse is connected).
Here you can change the pointer speed.
Pointer color and size:
Settings | Accessibility | Pointer control.
Set the cursor size and color.
Audio balance:
Settings | Accessibility | Audio and Visual.
At the bottom, you can adjust the balance.
Tap Back:
Settings | Accessibility | Touch.
Set up tapping on the back.
Tap to wake up:
Settings | Accessibility | Touch.
Toggle "Tap to wake up" on or off.
Charge time to %:
When the charger is plugged in,
the iPhone will indicate how much longer the charge will take.
Fast charge:
0 - 50% in 30 min
50% - 100% in 90 min
Use a 20W or higher charger.
3D wallpapers:
Load an image
Share
As wallpaper
Press the 3D button.
Keyboard in taskbar - MacBook
System Settings > Keyboard > Text input
Edit > Show input on menu bar.
In the menu bar, click > Show input viewer.
See also the video.
OnScreen keyboard - MacBook
System Settings > Accessibility > Keyboard.
Turn on the accessibility keyboard.
Scroll direction mouse
Settings > General > Trackpad & mouse.
Natural or Against.
Turn on Voice Control on Android
Settings | Accessibility | Interaction & Dexterity
Toggle Voice Access on. A blue circle will appear.
Tap the circle to turn on Voice Control. Or say "Okay Google, Voice access"
Now you can issue commands. With "Stop listening", Voice Control is temporarily inactive.
Say "Okay Google, Voice access" to wake up.
Predictive text:
Settings | General management | Keyboard | Samsung Keyboard
Predictive Text
Turn on Dutch.
Developer Mode:
Settings | About Phone | Software Data
Press Builder Number a few times (7x)
Back to Settings (an additional menu: Developer Options)
Turn off Developer Mode: slide to Off.
Log in with mouse - Tablet S9
Settings | Security & Privacy | More security settings
Block USB connections when locked: Disable.
Automatic action when pointer stops
When the mouse pointer stops in the corner.
Settings | Accessibility | Interaction & Dexterity
Automatic action when pointer stops.
Fast battery charging
Settings | Battery | Charging settings
Fast charging on/off.

When I got an Apple Music subscription, I noticed that I could no longer get my own music on my iPhone. I started iTunes, connected my iPhone to it and went to the iPhone icon (red arrow).

I couldn't check my playlists, they were gone. In iTunes it looked like this:
Solution: To be able to select your playlists again and put your own music on the iPhone, go to Settings on the iPhone and then to: Music.
Then go to 'Sync Library' (Synchroniseer bibliotheek) and slide it out. On the iPhone, the playlists you created with Apple Music will now disappear, don't worry, they will come back.
Launch iTunes and connect the iPhone to the PC. Go to the iPhone icon (red arrow).
You should now see the playlists that you can check.
Then click 'Synchronize' click.
Once that's done, go to the iPhone and go to the Music app. You should only see your own music that you added.

To now show the Apple Music playlists, go back to settings and to Music.
Go back to 'Sync library' (Synchroniseer bibliotheek) and slide it on.

It is now best to close the Music app via the App Switcher. And then open it again. After a few moments, Apple Music playlists will appear.

What happens when you hover your mouse pointer all the way into a corner and this text appears:
'Cannot control your computer with the mouse or keyboard connected to this tablet if an accessibility feature is enabled'
It's a 'Google Translate' translation of the text that appeared on my Tablet.
The 'Multi-control' feature is enabled. See below:

Turn off the function.
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