Initial data commit

Task/Test-a-function/REXX/test-a-function-1.rexx

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+/*REXX program stresses various REXX functions (BIFs), many BIFs are used as variables. */
+signal=(interpret=value); value=(interpret<parse); do upper=value to value; end
+exit=upper*upper*upper*upper-value-upper; say=' '; return=say say say; with.=signal
+do then=value to exit; pull=''; do otherwise= upper to then-,
+value; select=otherwise-value; if.otherwise=with.otherwise+with.select; end
+if.value=value; if.then=value; do otherwise=value to exit-then; pull=pull,
+say''say; end; do otherwise=value to then; pull=pull center(if.otherwise,,
+length(return)); end; say pull; do otherwise=value to exit; with.otherwise=,
+if.otherwise; end; end; exit 0                   /*stick a fork in it,  we're all done. */

Task/Test-a-function/REXX/test-a-function-2.rexx

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+/*REXX program shows a secret message to the terminal by using REXX built─in functions. */
+z.=' ';   z= 12-25-2002;   y= z;   w= -y
+ z.0= translate( right( time('c'), substr(z, 4, z==y)))
+ z.1= left( substr( format(z, 2, z==y, , z==y.1), 5), z==y)
+ z.2= copies( right( symbol('z.'20), z==y), left(w, 1))
+ z.3= translate( right( date('w'), z==y))
+ z.5= right( form(), z==y)
+ z.6= x2c( d2x( x2d( c2x( substr( symbol( substr(z, 2)), 2, z==y))) - 1))
+ z.7= right( symbol('z.' || (z\==z) ), z==y)
+ z.8= substr( form(), (z==y) + left(w, 1), z==y)
+ z.9= reverse( left( form(), z==y))
+z.10= left( substr( form(), 6), z==y)
+z.11= right( datatype(z), z==y)
+z.12= substr( symbol(left(z, z=z)), left(w, 1), z==y)
+z.13= left( form(), z==y)
+
+      do z=-31  to 31;   z.32= z.32 || z.z;  end
+say
+say z.32
+say
+exit 0                                           /*stick a fork in it,  we're all done. */