link example ln -s

Here is a successful example of linking a file that really exists in subdir of PersArmNoIntarm,
up to a phake one in main PersArmNoIntarm.  Note I am doing it FROM desired location of
phake.  I say to ln -s the original, down in subdir, to “dot” which is current (main) dir:

PersArmNoIntArm> ln -s OutputFromLocBoots/PersNoIntArmvsLocSlopes.20240717_S.Summ.eps .