The first way to divide sentences into groups in Ancient Greek was the original paragraphos , which was a horizontal line in the margin to the left of the main text.  As the paragraphos became more popular, the horizontal line eventually changed into the Greek letter Gamma (Γ and γ) and later into litterae notabiliores , which were enlarged letters at the beginning of a paragraph.  This notation soon changed to the letter K which was an abbreviation for the Latin word kaput , which translates as "head," . it marks the head of a new thesis.  Eventually, to mark a new section, the Latin word capitulum , which translates as "little head" was used, and the letter C came to mark a new section in 300 BC.  In the 1100s, C had completely replaced K as the symbol for a new chapter.  Rubricators eventually added one or two vertical bars to the C to stylize it (as ⸿); the symbol was filled in with dark ink and eventually looked like the modern pilcrow (¶). 
Writing Test Preparation
The best writing test preparation in sixth grade is simply encouraging your child to write, raising awareness of the written word, and offering guidance on writing homework. For example, you can talk about the different purposes of writing as you encounter them, such as those of letters, recipes, grocery lists, instructions, and menus. By becoming familiar with 6th grade writing standards, parents can offer more constructive homework support. Remember, the best writing help for kids is not to correct their essays, but offer positive feedback that prompts them use the strategies of writing process to revise their own work.