${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 <--
