Possible to specify data for more tag?

I used the Alew Teaser plugin to display content only before the more tag. There might have been a way, but I’m too tired of thinking about PHP to have done it without the plugin.

Display only content after the more tag:
<?php the_content('', true, ''); ?>

Just wondering if it’s possible to specify data for the “more” tag inside of a post page. Basically, I want to be able to pull content before the more tag on one area and pull only the content after the more tag in a different section — but all on the same post page.

This is exactly what I want to do! But on my index page, not a category page. the site

(I know this thread is old. I’m only posting to it because after a couple of hours searching, I didn’t find any other reference to this question.)

Did anyone figure out how to do this?

Update: Just to clarify, this didn’t work for me:
<?php the_content('', true, ''); ?>

Thanks a lot for any thoughts!