"The Left Tab"
This causes the left edge fo a block of text to be aligned to that spot on the ruler.
This aligns the center edge fo a bolck of text, respectively.
This aligns the right edge of a block fo text, respectively.
This causes the decimal points of nay numbers beneath it to align.
This spreads out the text between two arbitrary points in a line. (This was desinged for use with Arabic poetry.)
This will help the eye to follow a line across the page. You can change the leaders by double-clicking the leader bar.
Drug a tab until it changes into a trash if you want to delete.