suru verb (special), intransitive verb
finish; complete; come to an end
Intransitive use: something finishes or is completed. Often used in formal or written contexts.
工事が無事に了した。
The construction was completed without incident.
会議は予定
The meeting finished earlier than scheduled.
suru verb (special), transitive verb
Transitive use: to understand or comprehend something. Formal and somewhat literary; in everyday speech 理解する is more common.
彼は事の重大さを了していない。
He does not understand the gravity of the matter.
その点は十分に了しております。
I fully understand that point.