Returns the logical AND of the supplied arguments
(and [expr ...])
Arguments
Any expression.
Return Values
Nil, if any of the expressions evaluate to nil; otherwise T. If and is issued without arguments, it returns T.
Examples
Command: (setq a 103 b nil c "string")
"string"
Command: (and 1.4 a c)
T
Command: (and 1.4 a b c)
nil