+private{
+
+: env= ( c-addr u c-addr1 u1 x -- x true true | c-addr u false )
+ { x } 2over compare 0= if 2drop x true true else false then
+;
+
+: 2env= ( c-addr u c-addr1 u1 x y -- x y true true | c-addr u false )
+ { x y } 2over compare 0= if 2drop x y true true else false then
+;
+
+0 invert constant max-u
+0 invert 1 rshift constant max-n
+
+}private
+
+: ENVIRONMENT? ( c-addr u -- false | i*x true )
+ s" /COUNTED-STRING" 255 env= if exit then
+ s" /HOLD" 128 env= if exit then \ same as PAD
+ s" /PAD" 128 env= if exit then
+ s" ADDRESS-UNITS-BITS" 8 env= if exit then
+ s" FLOORED" false env= if exit then
+ s" MAX-CHAR" 255 env= if exit then
+ s" MAX-D" max-n max-u 2env= if exit then
+ s" MAX-N" max-n env= if exit then
+ s" MAX-U" max-u env= if exit then
+ s" MAX-UD" max-u max-u 2env= if exit then
+ s" RETURN-STACK-CELLS" 512 env= if exit then \ DEFAULT_RETURN_DEPTH
+ s" STACK-CELLS" 512 env= if exit then \ DEFAULT_USER_DEPTH
+ \ FIXME: maybe define those:
+ \ s" FLOATING-STACK"
+ \ s" MAX-FLOAT"
+ \ s" #LOCALS"
+ \ s" WORDLISTS"
+ 2drop false
+;
+
+privatize