Spacing between words and between mathematical objects is automatically determined by the document styleStyle.tex, but you can use the Spacing command on the Insert menuInsert_menu_commands.tex to add additional horizontal space to your content. On the screen, the program shows horizontal space as a small horizontal line; the line doesn't appear in print. These spaces are available:
| Space | Size |
|---|---|
| Em space | width of M |
| 2-em space | width of MM |
| Normal | 1/6 em |
| Required | 1/6 em |
| Non-breaking | 1/6 em |
| Thin space | 2/9 em |
| Thick space | 5/18 em |
| Zero space | 0 em |
| Negative thin space | -2/9 em |
| Italic correction | depends on character to the left |
| Custom spaceCustom_space.tex | as specified |
In addition, the Horizontal Space dialog box contains the No indent item, which causes the program to ignore an indentation called for by the style.