| Level 3: | Comment on description | |
| History of research | Setting of present description | |
| Level 2: | Description | |
| System of language | Setting of language | |
| Level 1: | Documentation | |
| Discourse – Texts | ||
| Level 3: | Comment on description | |
| History of research | Setting of present description | |
| Level 2: | Description | |
| System of language | Setting of language | |
| Level 1: | Documentation | |
| Discourse – Texts | ||