Pop two strings, the URL (s2) and the target name (s1).
All the usual HTML target names seem to be supported (_top, _blank, <frame name>, etc.) You can also use the special internal names _level0 to _level10. _level0 is the current movie. Other levels, I'm still not too sure how these can be used.
Use f_method to tell Flash how to handle the variables (see table below). The variables of the current SWF context can be forwarded to the destination page using GET or POST (this means you can create dynamic forms with full HTML conformance).
It seems that in V4.x (or would it be in V6.x?!? — it doesn't seem to work in V5.x) you could use URL2 to read a text file (with a .txt extension) with a list of variables using something like this:
Push URL "myvars.txt", Target "_level0"; Get URL2;
The syntax of the file myvars.txt is a set of lines defined as a variable name followed by an equal sign and the contents of that variable. If contents of a single variable is more than one line, start the following line(s) with an ampersand to continue that one variable.
|0||<don't send variables>|