 So let's have a look. In Julia, we enclose strings in double quotation marks. You see here one, two quotation marks, everything inside because we're using the notebook here that does this red color for us and we just type in anything we want. I've typed in this is a Julia string inside of these double quotation marks and indeed if I execute that cell we get the whole lot. This is a Julia string and we get those quotation marks. Now we can add that to a computer variable. I've introduced a variable here called str1 and inside of that variable, inside of that spacing memory, I'm going to put the string. This is a Julia string. I'm using the semicolon there, so it does not get printed to the screen. And now note the difference. I'm going to do two different things. I'm just going to call that computer variable str1 and then I'm going to print str1. Now look at the difference. So if I do that, I get back exactly what we had before with the quotation marks. But if I print it, let's see what we get back there without the quotation marks. So let's have a look at that. So if we print it, it loses those quotation marks and we only have the text. Now you might ask, what do we do if we want quotation marks inside of a string? For instance, yeah, this is a Julia string and I've put the Julia inside of quotation marks. Well, one way to get to do that is to use these triple quotation marks. It tells Julia that we might use quotation marks inside of our string and it is these triple quotation marks in the beginning and the end that delineate the actual string. So we've got the new variable called str2 and look what happens when I call it. There are these backslash. Now these backslashes are what we call escape characters. It actually tells Julia that whatever follows this is not part of the code. You have to escape it and use it as you would in a regular language. So let's print this and just have a look. See the difference there. This is a Julia string and the Julia now has quotation marks. So see the difference. This up here is what Julia is doing. It's inserting these escape characters. Now you'll remember from when we did functions. This is execute this execute the cell a equals one hundred and we use this shorthand this placeholder dollar a and then a was equal to a hundred. So this is going to say this value is one hundred. But what if I wanted to include that dollar? That would be akin to using the quotation marks that we did with Julia before. So what do we what do we do? In fact, this is what we do. Here you see the escape character. So escape dollar whatever comes after this escape. It says well dollar is used for something else. It is actually used as code. But in this instance, don't use it as code. Don't use this as code. Just use the literal meaning of what is there. It's just the dollar sign and then dollar a which was a hundred. And if we execute that you'll see this value the value of this item is a hundred dollars. Now it prints this dollar here is this dollar here. It is just escaped to tell Julia to ignore its use as code. A better way to perhaps to do it is to use this notation where we use this placeholder variable the dollar, but just put whatever the variable is in parentheses. So we know that you know, we know what this is all about and we know that this is the escape. Now we're going to get exactly the same thing. So there's your introduction to two strings in Julia. Next up we're going to look at parts of a string or substrings.