My mnemonic is that the parentheses are a following sidenote that can always be skipped by the reader in normal writing. The hyperlink to follow for more infor

My mnemonic is that the parentheses are a following sidenote that can always be skipped by the reader in normal writing. The hyperlink to follow for more information is the parenthetical. Then the brackets are literally bracketing the text that should be styled as a hyperlink.