1. Take a variable that is set to nothing and use a change contents action using that variable and the text box you want to clear.2. Sure. Best example is to create a new title and then use Tools menu > Page numbering tool. Look at the code they generate: It is Page x of y. This takes 4 actions to build the string and then one to stuff it into the text box.2.a. When you go to concatenate, you will have to trick it into thinking you have a text string if the variables contain numbers - not a number - else the add will add the numbers together mathwise not concatenate them. Since yours are letters should be no problem.2.b. Now the impossible part in Lectora is taking a value out of the middle of a string. You need to use JavaScript functions which are really not too hard but work only when publishing for a browser (html, AICC, SCORM)You can delete the last value in a string if you know what it is using subtract but that is all.
