I have never used octal numbers in my code nor come across any code that used it. I bet you have. According to the standard, numeric literals which start with zero are octal. This includes, trivially, 0. Every time you have used or seen a literal zero, this has been octal. Strange but true.
If you are making child support payments in Texas, the law generally requires you to do so until your child turns 18, which is the age that marks adulthood in the state, or when he graduates from high school -- whichever comes later.
Under the new law, a parent paying child support may modify their order to terminate support for a child once the child reaches age 19. This change puts Indiana in line with surrounding states that have used age 18 or 19 as the age of majority for some time now.