I think the second step is the one that's not clear. Here's how my solution works: 
Read and print from TEMPLATE until <!-- MAIN -->.
Read but don't print from TEMPLATE until <!-- ENDMAIN -->.
Read and print everything from FORMTEMPLATE.
Read and print everything that's left from TEMPLATE.

[download]
I figured that <!-- MAIN --> and <!-- ENDMAIN --> may contain some text that should be replaced by the form. The second loop just skips over all of that.

In reply to Re: Re: Re: Mixed-up output by chipmunk
in thread Mixed-up output by Nimster

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