Expressions

<%= someexpression %>   gives you some expression cast as a string.

for example:

<%= random(100) %> is a positive random number less than 100.

Scriptlets

PSP allows code to be inserted into the page as part of the request handling method. This code is called a "Scriptlet".

<%  somepikecode %>   inserts some pike code fragments in page (aka scriptlet)

for example

<% 
    for(int a = 99; a > 0; a--)
    {
      out+= (a + " bottles of beer on the wall.&#110;<p>");
    }
%>

the object "out" is available and is a String.Buffer. All of your output should be + or add()ed to this object.

return doesn't play a role here; don't use it!

blocks of non-psp markup are considered a block, so you can do this:

<% if(id->variables->somevar) %>
all this
appears if somevar is present and non-zero.
<% else %>
all of this appears otherwise, until we hit another <% %> (ie this shows up
regardless) block.

note that you can use {} in these cases to force the situation, as all text blocks get converted automatically to output().

<%!
     some pike code
%>

this code will be placed inside the servicing object, but outside of the page servicing method, so you can use this "directive" tag to define additional methods, perform inherits and includes, and so forth.

<%@ include file="" %>

this will include some other file into the current file, and will be parsed as a psp fragment. currently, the path is not relative to the document root. more work needs to be done on this.

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