hello, there is an API in OPC for this, but right now it's not used within any of the OPC themes by default because the delimer support was added at a late stage of VM developement and they are usually misconfigured (or misplaced) by default VM installation.
i added full placeholder support in clean_simple2 and band_box themes for next opc292 version which i sent you by email.
this is how to enable:
1. within bandbox or other themes that have this option, click here:
2. enable it here:
the delimiters can be further styled or customized via:
\components\com_onepage\themes\clean_simple2 (or your theme)\overrides\delimiter_start.php
\components\com_onepage\themes\clean_simple2 (or your theme)\overrides\delimiter_end.php
result should look like this:
notes:
1. empty delimiters are ignored (with no fields inside)
2. system created delimiters are reordered by opc core logic, so you may want to add your own within VM shopper fields
for now i fully tested only delimiters in BT section and "cart fields section under BT" and shipping section is not yet tested, but should work. (shall be tested before 292 release)
best regards, stan