Hints:
Answer:
This puzzle is a stereogram. In order for it to work, however, the solver must notice that the first and last lines are identical; each one contains no spaces and no repeated characters. Sorting the columns so that the top/bottom are in (increasing) ASCII order gives:
/0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz @leA sep in asr@leA sep in asr@leA sep in asr@leA sep in asr@leA sep in asr@ m[_r i xarag htm[_r i xarag htm[_r i xarag htm[_r i xarag htm[_r i xarag htm uring funt 3;P uring funt 3;P uring funt 3;P uring funt 3;P uring funt 3;P u do wlea KAL\ ftdo wlea KAL\ ftdo wlea KAL\ ftdo wlea KAL\ ftdo wlea KAL\ ftd ipe^c repas s nipe^c repas s nipe^c repas s nipe^c repas s nipe^c repas s ni INgFO n2ta por INgFO n2ta por INgFO n2ta por INgFO n2ta por INgFO n2ta por i ipng rota aL3T ipng rota aL3T ipn rota oaL3T ipn rota oaL3T ipn rota oaL3T i rlAn Guid Guag[rlAn Guid Guag[rlAn Guid Guag[rlAn Guid Guag[rlAn Guid Guag[r ot at teNinet Po] at teNinet Po] a teNinet sPo] a teNinet sPo] a teNinet spo kan ip h7pP JoIkan ip h7pP JoIkan ip h7pP JoIkan ip h7pP JoIkan ip h7pP joik le pAst ydeg nole pAst ydeg nole pAs ydeg cnole pAs ydeg cnole pAs ydeg cnol n0c1m5 oti dio n0c1m5 oti dio n0c1m5 oti dio n0c1m5 oti dio n0c1m5 oti dio n z/\ rACs rees Lz/\ rACs rees Lz/\ rac rees pLz/\ rac rees pLz/\ rac rees pLz sMa bBb8 ntips sMa bBb8 ntips sMa bBb8 ntips sMa bBb8 ntips sMa bBb8 ntips s Ut0 solip ccw bUt0 solip ccw bUt0 soli ccw abUt0 soli ccw abUt0 soli ccw abU J=wdeg oXoldto J=wdeg oXoldto J=wdeg oXoldto J=wdeg oXoldto J=wdeg oXoldto J up xref RET of up xref RET of up xref RET of up xref RET of up xref RET of u q ginoH sub w4Lq ginoH sub w4Lq ginoH sub w4Lq ginoH sub w4Lq ginoH sub w4Lq iN5t1nkpink [r iN5t1nkpink [r iN5t1nkpink [r iN5t1nkpink [r iN5t1nkpink [r i CK evo of3PL BOCK evo of3PL BOCK evo of3PL BOCK evo of3PL BOCK evo of3PL BOC 7q:n in lhr cR17q:n in lhr cR17q:n in lhr cR17q:n in lhr cR17q:n in lhr cR17 l a tr3f Rad5ill a tr3f Rad5ill a tr3f Rad5ill a tr3f Rad5ill a tr3f Rad5ill orsrv Has r>e? orsrv Has r>e? orsrv Has r>e? orsrv Has r>e? orsrv Has r>e? o 3ng s__v Taki p3ng s__v Taki p3ng s__v Taki p3ng s__v Taki p3ng s__v Taki p3 ptn DuR0cwed h3ptn DuR0cwed h3ptn DuR0cwed h3ptn DuR0cwed h3ptn DuR0cwed h3p [2]trpXY onts g[2]trpXY onts g[2]trpXY onts g[2]trpXY onts g[2]trpXY onts g[ A intld r3^cstMA intld r3^cstMA intld r3^cstMA intld r3^cstMA intld r3^cstMA /0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz
Now it is a standard stereogram. Staring gives "rota teNinet ydef rees ccw." The answer is ROTATE NINETY DEGREES CCW."