FMSLogo Code

Implement GetLabelFont() in pure wxWidgets.
This doesn't enable any new functionality, but it's a necessary step for doing so.

Change LABEL to always copy the memory DC to the screen.

For some unknown (to me) reason, DrawRotatedText translates the text slightly (and differently) depending on the angle, whereas the MSW ::TextOut was able to draw consistently. This results in the screen image being different from the memory image, which means that the screen image changes when it's refreshed. Rather than have this inconsistent drawing, the screen image is now always copied from the memory image, instead of being drawn separately.

Fix build breaks on MSW introduced when porting LABEL and LABELSIZE to wxWidgets

Remove a definition of HDC when WX_PURE is defined.
This is apparently no longer needed.

Port LABEL and LABELSIZE to use wxWidgets API
This enables both commands to function on GNU/Linux.

Merge the two style guides.
I don't know why there are two of them, but I suspect that I created a second one after forgetting that the first one existed.

Capitalize MAX in the error message in the second example.
This better follows the style guide (all procedure names are capitalized)

Remove the techincal terms "synchronous" and "asynchronous" and instead just describe the behavior.
This makes the manual simpler (easier to read by a non-technical audience)

Separate the description of 0 and 1-127 for a MIDI velocity.
This makes the description clearer, since 0 means "is released" and there's no way to express "how hard" a key is released.

Add more <userinput> tags to the glossary for "contents list".
This makes it clearer what's part of all contents lists and what's part of the specific example given in the glossary.