Add punctuation: Start date 14 October 1600CET
A: Start date: 14 October 16:00CET

Add punctuation: Sometimes rugs are what we call cutsize which means that a 9 x 12 rug may actually measure 8 6 x 11 6
A: Sometimes rugs are what we call cut-size, which means that a 9' x 12' rug may actually measure 8' 6'' x 11' 6''.

Add punctuation: Tshirts in red with round neck and short sleeves 100 cotton
A:
T-shirts in red with round neck and short sleeves (100% cotton)