Bending the top of the page; putting one letter next to another; שרטט קוים באוכלים.
Practical applications which apply to the Melacha of "BONEH".
חסרון כיס Machmas Chesron Kis: A Very Expensive Wine Bottle;
Measuring for a mitzvah - "מדידה של מצוה". Preferably should be done on "ערב שבת".