Rob is working on an online financial application in which data keeps changing every few minutes. which function key should rob use to ensure that his browser is refreshed to show the latest data? rob should use the key to refresh his browser.

*write a program that defines symbolic names for several string literals (chars between quotes). * use each symbolic name in a variable definition. * use of symbolic to compose the assembly code instruction set can perform vara = (vara - varb) + (varc - vard); ensure that variable is in unsigned integer data type. * you should also further enhance your symbolic logic block to to perform expression by introducing addition substitution rule. vara = (vara+varb) - (varc+vard).