OUTPUTΒΆ
| OUTPUT_DIAGNOSTIC | Diagnostic output, shows up if a group of output is activated. This is the default. |
| OUTPUT_WARNING | Warning output, shows up if a group of output is activated. |
| OUTPUT_CRITICAL | Critical output, shows up if a group of output is activated. |
| OUTPUT_NOLINEBREAK | If set, no line break is added. |
| OUTPUT_HEADER | If set, header with line number and file name is added. C++ only. |