The letter in the parens ( a ) should be an alpha.

The symbol in the parens ( ¥ ) should be an infinity symbol.

In the parens ( ® ) should be a right pointing arrow.

In the parens ( H ) should be a bold script capital H.

This line should be in italics.

This line should be in bold.

This line should be in bold italics.

The should be an integral equation: .