You'd need the modifier for every field on the page or the template that might contain tags. I think you'd be better off with a plugin attached to OnWebPagePrerender, something like this:
<?php
/* Code for strongToB Plugin */
$output =& $modx->resource->_output;
$replacement = array('<b>','</b>');
$words = array('<strong>', '</strong>');
$output = str_replace($words, $replacement, $output);
If you're sure all the strong tags are in the Resource content field, you could use a plugin attached to OnBeforeDocFormSave, then the tags would be converted each time the doc is saved and page loads would be faster:
<?php
/* Code for strongToB Plugin */
$pageContent = $modx->resource->getContent();
$replacement = array('<b>','</b>');
$words = array('<strong>', '</strong>');
$pageContent = str_replace($words, $replacement, $pageContent);
$modx->resource->setContent($pageContent);
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PLEASE, PLEASE specify the version of MODX you are using . . . PLEASE!
MODx info for everyone:
http://bobsguides.com/MODx.html
[ed. note: BobRay last edited this post 12 years, 3 months ago.]