Unique rules when forming that grammar are highlighted like this.
Example sentences follow these rules too!
Joining and Nesting Markers:
Verb[た/る] - means that dictionary form and ta form are accepted.
Verb[causative[て]] - means て form of the causative form of the verb.
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使用域一般
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(A) 以前 is used when a certain level/stage has not been reached yet, and the more fundamental issues of (B) remain. Often used to criticize thoughtless remarks, irresponsible attitudes, and the like. The noun 問題 is commonly modified by 以前.