Can I put spaces in strings? If so do I need to do anything special? Here's the deal, I'm doing something to make my life easier, I'm making all contact links fill in the subject on my form script automatically, here's and example of what I'm doing:

<a href="contact.php?why=Submit&what=News&which=ConcertDates">Submit Concert Dates</a>

Now I was just wondering if and how to put spaces in the string so it would be like this:

<a href="contact.php?why=Submit&what=News&which=Concert Dates">Submit Concert Dates</a>

Can I do that or should I just make extra fields like which1 which2 etc..?