Thanks for reporting this. I've fixed this in the original source now, so it will be correct the next time an updated manual is released.

Errors in the manual or the tome can be reported to me using tome@profantasy.com (Please only use this address for reporting actual problems, it's not a help/support address)

This is how it was with CC3 and older, the data files lived in the installation directory. But that causes all kinds of issues, because only administrators can write to that directory, so if you run CC3 as a non-admin user you get into trouble, and because of Windows UAC which runs everything in non-admin mode even if you are and admin unless you request otherwise, people would always need to right click on the icon and do a run as admin. Keeping the data files with the program itself is going right against the recommended way of doing things on Windows.

All modern programs split their data files up this way. My browser's data folder is found in App data in my user profile, my image editor puts its sample files in my documents directory, my games store their saves and settings either in my documents, or appdata (varies). It is generally a very bad idea to mix user-editable files with files the user shouldn't mess with (program files).

Some programs do allow people to pick the installation path, but CC3+ is so tiny that it shouldn't really make a difference no matter how small a C drive one have. (Note that Windows do actually make it possible to move the program files directory itself thus making all installations go somewhere else, although this isn't straight-forward to set up)

Keeping the data folder on another drive is no problem, CC3+ is designed to allow that, just select the location from the CC3+ installer, and it will set up correctly for that. The data folder can grow pretty big, so not everyone will have space on their system drive for it. Just remember where you placed it.

You only risk items not found if something isn't done correctly. For example, someone may have manually imported official artwork into their map using the absolute path of their data folder, instead of the more appropriate relative path. Using a relative path means it is relative to the data folder location, and will work no matter where it is placed, which is the way all official ProFantasy resources is set up.

My data folder is ~50 GB.

This forum has the ability to embed CC3+ buttons in posts, which can be a great visual aid when explaining something to people. There are two versions, image with text (ex: :CC2MCHANGE:), and just the image (ex: |CC2CO|)

Adding these into a post is just a matter of taking the CC3+ button image identifier and putting it between two colons or two vertical bars, like this:

:PERIBOX: ⇒ :PERIBOX:

|GLOBE| ⇒ |GLOBE|

Note that this will just show as the code when you are editing the post, you won't see the actual button until you actually post your comment.

Do you have the 2012 annual? Issue 68 has a bit more on these commands, including using them in a tutorial.