QUESTION: Fix punctuation: Xerxes Gate Gate of All Nations holiday pictures Persepolis
ANS: Xerxes Gate (Gate of All Nations) - holiday pictures - Persepolis

QUESTION: Fix punctuation: Enter the length of L2 in mm L2
ANS: Enter the length of L2 in mm: L2

QUESTION: Fix punctuation: Printer optional for printing reports
ANS: Printer, optional for printing reports

QUESTION: Fix punctuation: So in case anything happens to your local program your passwords wont be lost
ANS:
So, in case anything happens to your local program, your passwords won't be lost.