diff --git a/make-includes/build_lecture_rules.make b/make-includes/build_lecture_rules.make
index b2fd757..62d6f9e 100755
--- a/make-includes/build_lecture_rules.make
+++ b/make-includes/build_lecture_rules.make
@@ -50,7 +50,7 @@
 # PDF files exist. They will be caught by by the "clean" target though.
 #
 TIDY_FILES+=*.tmp *.out *.log *.nav *.toc *.snm *.head *.dvi \
-	slides-combined.pdf slides-notes.pdf
+	slides-combined.pdf slides-notes.pdf $(IMGDIR)/*-tmp.pdf
 CLEAN_FILES+=*.aux *.pdf
 
 
@@ -58,13 +58,7 @@
 #
 # Various environment variables.
 #
-# Set DRAFT to anything to run in draft mode (e.g., make DRAFT=draft xxx).
-#
-DRAFT=
-#
-# Specify LaTeX document options (comma-separated list).
-#
-LATEX_OPTS+=pdftex,usepdftitle=false,$(DRAFT)
+include $(GLOBAL_HANDBOOK_INCLUDE)/standard_environment.make
 #
 # Base file names for the various documents.
 #
@@ -87,8 +81,7 @@
 #
 # List of standard "phony" build targets.
 #
-TARGETS+=all slides notes slides-combined slides-notes figures figures2up \
-	combined debug test clean tidy install targets
+TARGETS+=slides notes slides-combined slides-notes figures figures2up combined
 #
 .PHONY: $(TARGETS)
 
@@ -333,71 +326,4 @@
 #
 # Standard default rules.
 #
-# PDF from LaTeX via DVI, typically for images drawn using PSTricks).
-# 
-%.pdf: $(IMGDIR)/%.tex
-	latex --jobname=$(IMGDIR)/$* $<
-	dvips -q -f $(IMGDIR)/$* | ps2eps -q -l | epstopdf -f -o=$(IMGDIR)/$@
-#
-# PDF from LaTeX.
-#
-%.pdf: %.tex
-	pdflatex $<
-	pdflatex $<
-#
-# PDF from OmniGraffle. (We can't automate this.)
-#
-%.pdf: %.graffle
-	@echo "$(notdir $<): regenerate $(notdir $@)"
-	@exit 1
-#
-# Various bitmap types embedded in OmniGraffle. (We can't automate this.)
-#
-%.graffle: %.png
-	@echo "$(notdir $@): reinsert $(notdir $<)"
-	@exit 1
-
-%.graffle: %.jpg
-	@echo "$(notdir $@): reinsert $(notdir $<)"
-	@exit 1
-#
-# PNG from TIFF.
-#
-%.png: %.tif
-	convert "$<" $(IMGDIR)/$@
-#
-# PNG from PICT.
-#
-%.png: %.pict
-	convert "$<" $(IMGDIR)/$@
-#
-# PDF from Ploticus.
-#
-%.pdf: %.plo
-	ploticus -eps -tightcrop -o stdout $< | shiftbbox | epstopdf --filter --outfile=$(IMGDIR)/$@
-#
-# PDF from PS
-#
-%.pdf: %.ps
-	ps2eps --ignoreBB --nohires --loose < $< | ps2pdf -dEPSCrop - $(IMGDIR)/$@
-#
-# PDF from EPS
-#
-%.pdf: %.eps
-	ps2eps --ignoreBB --nohires --loose < $< | ps2pdf -dEPSCrop - $(IMGDIR)/$@
-#
-# PDF from SVG (via Inkscape)
-# We remove the intermediate file manually rather than through the tidy/clean
-# mechanism, because we might have EPS files that aren't generated by 
-# something else. See build_content_rules.make for explanation of ps2eps 
-# options.
-#
-# BIZARRENESS: While Inkscape produces correctly cropped EPSs in the first
-# place, if we don't run them through ps2eps first, ps2pdf has a tendency to
-# rotate the PDFs 90 degrees clockwise for no obvious reason and without any
-# apparent pattern.
-#
-%.pdf: %.svg
-	inkscape --file=$< --export-text-to-path --without-gui --export-eps=$(IMGDIR)/$*.eps
-	ps2eps --ignoreBB --nohires --loose --gsbbox < $(IMGDIR)/$*.eps | ps2pdf -dEPSCrop - $(IMGDIR)/$@
-	rm -f $(IMGDIR)/$*.eps
+include $(GLOBAL_HANDBOOK_INCLUDE)/standard_rules.make