Empty page for makefiles that are missing a MANSEC variable (the directories don't have code in them).

cr/
bcgs/
bcgsl/
cg/
cgs/
gmres/
cheby/
rich/
lsqr/
preonly/
tcqmr/
tfqmr/
qcg/
bicg/
minres/
symmlq/
lcd/
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