-The recommended value of `CPU_COUNT' is one plus the number of cores or
-processors, but it is advisable to set it to a smaller value unless
-your system has enough RAM to run that many simultaneous LilyPond
-instances. Also, values for the `-j' option that pose problems with
-`make' are less likely to pose problems with `make doc' (this applies
-to both `-j' and `CPU_COUNT'). For example, with a quad-core processor,
-it is possible for `make -j5 CPU_COUNT=5 doc' to work consistently even
-if `make -j5' rarely succeeds.
+The recommended value of ‘CPU_COUNT’ is one plus the number of cores or
+processors, but it is advisable to set it to a smaller value unless your
+system has enough RAM to run that many simultaneous LilyPond instances.
+Also, values for the ‘-j’ option that pose problems with ‘make’ are less
+likely to pose problems with ‘make doc’ (this applies to both ‘-j’ and
+‘CPU_COUNT’). For example, with a quad-core processor, it is possible
+for ‘make -j5 CPU_COUNT=5 doc’ to work consistently even if ‘make -j5’
+rarely succeeds.