WAIT - pause for a specified length of time.

$*$WAIT expression :string: evaluates "expression" to get an integer "n". It then outputs "string", and pauses for "n" seconds. If "n" is negative, EXEC does not pause. EXEC does not write a new-line after outputting "string". This means that you can use $*$WAIT to prompt for input and obtain the input on the same line as the prompt.