Ensure vertical space before start of a section.

diff --git a/macros.tex b/macros.tex
index 54ac480fff28a684f834452a099313b64761141b..c6a617ef669a1c49b00a8372bb586a8df0fc4c87 100644 (file)
--- a/macros.tex
+++ b/macros.tex
@@ -382,7 +382,14 @@
 \writetoc{chap}{#1}
 }
 
+\def\vensure#1{\dimen0=#1
+\vskip 0pt plus \dimen0
+\penalty-1000
+\vskip 0pt plus -\dimen0
+}
+
 \def\section#1{\bigskip
+\vensure{0.5in}
 \advance\seccount by 1
 \thmcount=0
 \edef\currentid{\currentchap.\the\seccount}