Marks left/right/top/bottom...

Four of the commands in the Margins menu of the Picture window.

## Purpose

To draw any number of equally spaced marks into the margins around the drawing area.

## Settings

Number of marks
  the number of equally spaced marks (2 or more) that will be drawn; there will always be marks at the beginning and end of the domain or range.
Write numbers
  if on, real numbers will be written in the margin, expressed in the domain or range of your latest drawing in the horizontal or vertical direction.
Draw ticks
  if on, short line pieces will be drawn in the margin.
Draw dotted lines
  if on, dotted lines will be drawn through your drawing.

## Example

If you draw a Sound with a domain between 0 and 1 seconds to an amplitude range between -1 and 1, choosing Marks left... with a number of 3 and Draw dotted lines on, will give you horizontal marks and horizontal dotted lines at -1, 0, and 1; choosing Marks bottom... with a number of 6 and Draw dotted lines off, will give you vertical marks at 0, 0.2, 0.4, 0.6, 0.8, and 1.