Does WP-access-editor use mod_rewrite_rules

Does wp-access-editor manipulate .htaccess directly, or does it place code into the site that uses mod-rewrite-rules to update the .htaccess. That is, do the changes made using wp-access-edtitor to .htaccess get preserved across operations such as permalink regeneration (during which WordPress) updates its portion of the.htaccess file.

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