Returns a SHA1 hash based on the string value passed through the function. The SHA1 hash tag returns a hexidecimal value.

SHA1(1, 2)

1stringRequiredAlphanumeric string from which SHA1 hash tag derives
2stringCharacter set to use for the encoding. This function defaults to UTC-8 if not specified. You can also specify UTC-16.

This function returns a hash in UTF-16 format based off of the text string 'Insert Text Here.'