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Finally , a series of guidelines are summarised to assist the path planning and process parameter selection processes in multi-directional WAAM .
 enabling technology: path planning; concept or principle: process parameter; concept or principle: processes; manufacturing process: WAAM
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:
 enabling technology: path planning; concept or principle: process parameter; concept or principle: processes; manufacturing process: WAAM