xx[()]zxzoppaopxx-group operations within an arithmetic expression
xx[==]zxzopeqtoxx -logical "is equal to" operator
xx[++]zxzopauinxx -auto-increment suffix operator
xx[--]zxzopaudexx -auto-decrement suffix operator
xx[**]zxzopratoxx -"raise to the power" operator
xx[//]zxzopjoinxx -join operator
xx[>>]zxzopapndxx -append operator
xx[=]zxzopasgnxx -assign operator
xx[+]zxzopplusxx -addition operator
xx[-]zxzopmiusxx -subtraction operator
xx[*]zxzopmupyxx -multiplication operator
xx[/]zxzopdidexx -division operator
xx[>=]zxzopgreqxx -logical "greater than or equal to" operator
xx[>]zxzopgrthxx -logical "greater than" operator
xx[<=]zxzopleeqxx -logical "less than or equal to" operator
xx[<]zxzoplethxx -logical "less than" operator
xx[!=]zxzopnoeqxx -logical "not equal to" operator
xx[!]zxzopnotxx -bit-wise complement operator, or Factorial operator
xx[&]zxzopbianxx -bit-wise AND operator
xx[|]zxzopbiorxx -bit-wise OR operator
xx[?]zxzopquryxx -"query" operator -- gets status of operand
xx[$]zxzopespexx -temporary escape from CIGAL to execute other programs
xx[}]zxzopbrclxx-mark the end of a block of conditional commands