diff --git a/pdf/p-test.tex b/pdf/000-test.tex
similarity index 100%
rename from pdf/p-test.tex
rename to pdf/000-test.tex
diff --git a/pdf/p-background.tex b/pdf/010-background.tex
similarity index 100%
rename from pdf/p-background.tex
rename to pdf/010-background.tex
diff --git a/pdf/p-trans.tex b/pdf/020-trans.tex
similarity index 100%
rename from pdf/p-trans.tex
rename to pdf/020-trans.tex
diff --git a/pdf/p-boxed.tex b/pdf/030-boxed.tex
similarity index 100%
rename from pdf/p-boxed.tex
rename to pdf/030-boxed.tex
diff --git a/pdf/p-shading.tex b/pdf/100-shading.tex
similarity index 100%
rename from pdf/p-shading.tex
rename to pdf/100-shading.tex
diff --git a/pdf/p-pattern.tex b/pdf/110-pattern.tex
similarity index 100%
rename from pdf/p-pattern.tex
rename to pdf/110-pattern.tex
diff --git a/pdf/p-labels.tex b/pdf/200-labels.tex
similarity index 100%
rename from pdf/p-labels.tex
rename to pdf/200-labels.tex
diff --git a/pdf/p-links.tex b/pdf/210-links.tex
similarity index 100%
rename from pdf/p-links.tex
rename to pdf/210-links.tex
diff --git a/pdf/p-outline.tex b/pdf/220-outline.tex
similarity index 100%
rename from pdf/p-outline.tex
rename to pdf/220-outline.tex