1979
Voxels are used to carry the design rules and manufacturing constraints for reasoning and combination during the geometry evolution process .
 concept or principle: Voxels; concept or principle: design rules; concept or principle: manufacturing constraints; concept or principle: geometry evolution
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 concept or principle: Voxels; concept or principle: design rules; concept or principle: manufacturing constraints; concept or principle: geometry evolution