Readings:
This week please read pg. 57–96, 109–111, please remember you don’t have to read sections marked with a double dangerous curve sign. In this section there are a lot of dangerous curve signs please pay attention to what kind of section you are in.

Key Concepts:
• What the different ways to refer to spacing look like.
• What the basic format of an expression of physical dimension is.
• What the heck is glue and why is it poorly named.
• Why and when do we use ~.

Exercises:
Exercise 1 (Exercises from the Reading)
• Chapter 11: 11.2, 11.3, 11.4
• Chapter 12: 12.1, 12.5
• Chapter 13: 13.1, 13.4
• Chapter 14: 14.1, 14.2, 14.4

Exercise 2 (Writing a letter with TeX)
With your new found understanding of glue, and how TEX puts together boxes, to make lines, paragraphs and pages, put together a simple letter template. You should make the format that of a standard business letter, with the body either blank or lorem ipsum. This means you need your address and some sample fake address to which your letter would be sent.