Probably just the arrow head being tiny. Use Tools -> Set Properties -> Arrow Style and change it to something more reasonable for your map size.

Change the line width of the entity to 0.

Great. Means your issue is caused by the bug I stumbled over. Turns out notes also live on a sheet, so if you accidentally delete the one they're on (which there is no way to tell) you also delete the notes. Seems like they're on the LAND sheet for lot of the official templates (by pure coincidence), but no guarantee all templates are like that (probably not, since city and dungeon styles don't have a LAND sheet at all).

I've reported this to the appropriate authorities.

I agree, it is not pure black and white as to what is best, videos or text. But I can scan an A4 page of text and pick out the bits I need in seconds, while a video covering the same thing would be in the 10-20 minutes range or more, and it is impossible to scan it the same way you do a page of text. And text can easily be searched for keywords. In most cases videos simply eat up more of my precious time. I always hate when I search for help on a problem on google, and the only thing I find are links to videos. You often can't even tell if they are relevant to your problem before getting far into it.

But when it comes to demonstrating a complicated thing, videos can often be superior to see someone actually performing the task. And when seeing something visually, you don't need to understand the particular jargon either, you see what they do even if you didn't know what it was called.

Having the video divided up into chapter helps, but when creating a video it is often difficult to create good chapters. It is also a lot of extra work when creating the video, either up front because you need a much more detailed plan, or afterwards because you need to work through it and figure out how to divide it and what part really is. And people often come to the video looking for different aspects of things, which means that the chapter division that works perfectly for one doesn't provide a good organization for another (books have the same problem)

You can use the SYMDELNEAR command to do this.