Semicolon ;
Basic Rule: There must be an independent clause (complete sentence) on each side of a semicolon.
"It's supposed to rain tomorrow; we could use the rain."
"Call me tomorrow; we'll figure everything out then."
"This is Steve's book; I found it in my car."
Notice there are complete sentences on each side of the semicolons.
If a period can't replace your semicolon, you didn't use it correctly.
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