### slidy
%.slidy.html: export ASCIIDOC_FLAGS+=-arevnumber="$(VERSION)"
%.slidy.html: export ASCIIDOC_FLAGS+=-atabsize=0
-%.slidy.html: export ASCIIDOC_FLAGS+=-alatexmath=0
+%.slidy.html: export ASCIIDOC_FLAGS+=-alatexmath
$(patsubst %.ad,%.html,$(wildcard *.slidy.ad)): \
$(tool/asciidoc)/conf/latexmath.conf \