We can use HTML code after setting several options in phpBB’s Administrator Control Panel (= ACP) in version 2.xx but it have been totally disabled to use for security reasons.
So we have to make our own BBCode instead of using original HTML.
(See here : BBCode guide)
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1. Log-in as phpBB administrator
2. Administration Control Panel > Posting > BBCode > Add a new BBCode
3. BBCode Usage
5. Help line
cf. Custom BBCodes
: Please be sure not to use parameter ‘{SIMPLETEXT}’ used there. phpBB 3.0 can’t understand that. Use ‘{TEXT}’ instead. I have suffered some problem with this. :)

