Sentence:  It is convenient to classify a child 's onset ages and completion ages as `` advanced '' , `` moderate '' ( modal ) , or `` delayed '' according to whether the child 's age equivalent `` dots '' appeared to the left of , upon , or to the <WSD>right</WSD> of the appropriate short transverse line . 
Meaning of the word marked with <WSD> tags:  an abstract idea of that which is due to a person or governmental body by law or tradition or nature; it is something that nobody can take away"