| string_ | (required) The string class we use for holding logged messages. By default, std::(w)string. What you used to specify using BOOST_LOG_FORMAT_MSG. | |
| param1 | (optional) First tag | |
| param2 | (optional) Second tag | |
| param3 | (optional) Third tag | |
| param4 | (optional) Fourth tag | |
| param5 | (optional) Fifth tag | |
| param6 | (optional) Sixth tag | |
| param7 | (optional) Seventh tag | |
| param8 | (optional) Eigth tag | |
| param9 | (optional) Nineth tag | |
| param10 | (optional) Tenth tag |