${A-1} = 3.14159; $A = $A-1; $A = $A -1; $A-=2; $A = 123E-2; $A = Pi(); $B = sin ($A-1); $B = sin (${A}-1); $B = sin($A -1);
-2**2 = -4 except when it comes out +4 as in MS Excel. _2**2 = +4 in some other languages that use _ as a unary minus operator. Will editors be bothered when I try to include "-" in the list of characters that are considered words when double clicking? When doing a find and replace all as words? Is the unicode equivalent of allowed in a variable name? -- --> Give me liberty or give me Obamacare <--