The value of the expression followed by a newline is written on the standard output. If the last two characters of the value of the expression are \c, the \c and the newline are not written.
The built-in echo command is only available when menu has the built-in menu commands enabled.
echo "Please wait..."
echo "Deleting report file" : rptfile : "."
echo "Deleting report file $rptfile."
echo "This item is" : item/total*100 : "% of the total."