This plugin can be installed either by using the plugin browser or
downloading the zip and uploading using your favorite FTP client.
Once uploaded to the user/plugins folder, click on the Options -> Plug-Ins
tab and activate the Show Crop plugin.
Two new options will be available on the Options -> Images tab, Crop
Opacity and Crop Color. Crop Opacity is a number between 0 and 100 that
controls how opaque the crop masks are. Crop Color is the color of the mask
and can be any string that works in a CSS file to define a color. You can use
literal colors (black, white, etc), hex codes (#ffffff, #cccccc, etc), or
So '4x6 Print', '8x10" Print', '24x36 Canvas' would all show masks when
appropriate. 'A Really Big Print' would not. '5"x7" print', '5 by 7 print',
or '5 x 7 Print' also would not.