Comments
A comment may be placed in a Hugo program anywhere that whitespace (blanks and tabs) may be used. There are two types of comments, line comments and block comments.
A line comment is an unquoted exclamation point !. The exclamation point is treated as an end of line; it and anything following it on the same line are ignored.
A block comment is a line beginning with exclamation point followed by backslash, !\ and continues until the inverse symbol, a backslash followed by an exclamation point, \!. Everything inside the block comment is ignored by the compiler.