Seeing this is the default of the idxlayout package and the result
looks better, remove the option disabling it.
Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx>
---
perfbook-lt.tex | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/perfbook-lt.tex b/perfbook-lt.tex
index 8a29310d..1003b153 100644
--- a/perfbook-lt.tex
+++ b/perfbook-lt.tex
@@ -74,7 +74,7 @@
\usepackage[breakable,skins]{tcolorbox}
\usepackage[split,makeindex]{splitidx}
\usepackage[nottoc]{tocbibind}
-\usepackage[columns=3,totoc,indentunit=12pt,justific=raggedright,font=small,columnsep=.15in,unbalanced]{idxlayout}
+\usepackage[columns=3,totoc,indentunit=12pt,justific=raggedright,font=small,columnsep=.15in]{idxlayout}
\usepackage[bookmarks=true,bookmarksnumbered=true,pdfborder={0 0 0},linktoc=all]{hyperref}
\usepackage{footnotebackref} % to enable cross-ref of footnote
\usepackage[all]{hypcap} % for going to the top of figure and table
--
2.17.1
