A separator is a label which appears in the explore tree 
to help structuring the script. An easy way to add 
separators is to use the 'Edit'>'Insert colored separator'
wizard from the menu.

Syntax:
* normal:      #---label
* coloured:    #---label---#foregroundcolour#backgroundcolour
* highlighted: ####label

Foreground and background colour are in html notation, eg:
* red on blue label: #---red on blue---#FF0000#0000FF