[macros] Prefer a page break after note or example.

Author: jensmaurer

source/macros.tex

@@ -303,7 +303,9 @@
 {\noteoutro{#3}}
 \newenvironment{#1}
 {\begin{tail#1}}
-{\end{tail#1}\small\par}   % \small\par is for C++20 post-DIS compatibility
+% \small\par is for C++20 post-DIS compatibility
+{\end{tail#1}\small\par\penalty -200}
+
 }
 
 \newnoteenvironment{note}{Note \arabic{note}}{end note}