.½
, .¾
, .¼
for Sine, Cosine, Tangent respectively that should be Ž
, ž
, ż
instead; .µ
(reset counter_variable to 0) and .¼
(decrements counter_variable) which have been added; Ú
which has been changed to "pops a and b and trims leading and trailings b's of a"; ~
which states Logical OR instead of Bitwise OR; and probably more I forgot..