Grids work like a graph paper . Grids enable us to draw objects precisely. Grids are not the part of our final image i.e. they do not appear in movie.
Turn on grids
From "view menu" choose "grids".
Turn off grids
From "view menu" choose "grids".
Rulers are measuring scales. If we need to measure objects precisely we turn on "ruler" from "view menu".There are six different measuring units in Flash.
How to set measuring unit ?
From "modify menu" choose "movie" and select a ruler unit in the dialogue box.
Movie properties
Here you can set movie size and movie background color
From "modify menu" choose "movie", movie properties dialogue box will appear:
Set required values such as movie size, background color, grid color, grid size etc. and click "OK".