• everyday and academic vocabulary,
• collocation and phraseology,
• learning area vocabulary versus general vocabulary,
• lexical density.

The grammatical level:

• agency and objectivity,
• tense,
• cohesion,
• constituent structure.

The informational level (text organisation):

• given/new,
• theme/rheme,
• general/specific
• chronological/hierarchical/temporal
• representing knowledge structures.

The rhetorical level:

• sentence functions,
• sentence relationships,
• paragraph structure.