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.
Aの至り is a humble expression used only in formal writing and speeches meaning that A is the highest, extreme state. Usually used in positive contexts, when talking about the speaker or her/his group. Generally follows expressions like: 光栄、赤面、感激、恐縮、同慶. 若気の至り is a set expression used when describing something that one considers an error made due to one's inexperience and young age.