For terminals that have additive attributes the following are used. Entries marked with an asterisk (*) should be set appropriately for the type of terminal:
| Entry | Mnemonic |
|---|---|
| Enter blink mode * | blink |
| Enter bold mode * | bold |
| Enter dim mode * | dim |
| Enter reverse mode * | rev |
| Enter underline mode * | smul |
For terminals that do not have additive attributes, the following is needed:
| Entry | Mnemonic |
|---|---|
| Set attributes | sgr |
Highlighting is also affected by the COBATTR environment variable. See the appendix Environment Variables for details.