The Bat! 8.5.4.2 (BETA) is available at
https://www.ritlabs.com/download/files…a/tb8542-32.rar
https://www.ritlabs.com/download/files…a/tb8542-64.rar
What's new in 8.5.4.2 since 8.5.4:
[!] "Zoom" in plain text editor and viewer (MicroEd) - you can change the font size by Ctrl+MouseWheel
There is no keyboard shortcut yet that would have allowed to do that without mouse.