1 IF
\r\r IF <expression> THEN
\r <body>
\r [ELIF]
\r <body>
\r [ELSE]
\r [body]
\r ENDIF | END IF | FI
\r\r Type: statement
\r\r Execute <body> if <expression> is true. If <expression> is not true then
\r run the optional ELSE body. Multiple IF's can be written with ELIF. The
\r IF construction should end with ENDIF or END IF or FI. Example:
\r\r a = 0
\r IF a > 10 THEN
\r PRINT "This is strange:"
\r PRINT "a is bigger than 10"
\r ELSE
\r PRINT "a is smaller than 10"
\r END IF
\r\r If only one function or statement has to be executed, then the
\r if-statement also can be used without a body. For example:
\r\r IF age > 18 THEN PRINT "You are an adult"
\r ELSE INPUT "Your age: ", age
\r\r Use with care as nested IF/THEN statements using one function may
\r confuse the parser.
\r\r