So that they can be folded.
Suggested-by: Deri James <deri@chuzzlewit.myzen.co.uk>
Cc: "G. Branden Robinson" <branden@debian.org>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| $(PIC) \
| $(TBL) \
| $(EQN) -Tpdf \
| $(PIC) \
| $(TBL) \
| $(EQN) -Tpdf \
- | $(TROFF) -mandoc -Tpdf -F$(_FONTSDIR) -dpaper=a4 -rC1 $(TROFFFLAGS) \
+ | $(TROFF) -mandoc -Tpdf -F$(_FONTSDIR) -dpaper=a4 -rC1 \
+ -ran*bookmark-base-level=1 $(TROFFFLAGS) \
| $(GROPDF) -F$(_FONTSDIR) -pa4 $(GROPDFFLAGS) \
| $(SPONGE) $@
| $(GROPDF) -F$(_FONTSDIR) -pa4 $(GROPDFFLAGS) \
| $(SPONGE) $@