[Lazarus] what do i see left of the Scrollbar?

[Martin Frb]

On 11/05/2017 08:50, Landmesser John via Lazarus wrote:
>
> just curious:
>
> what do i see left of the Editor windows Scrollbar ... these little 
> colored bars?
>
>

An overview of the entire file (all lines)

orange boxes are location of errors (compilation)
blue boxes are bookmark
red boxes are breakpoints
short green/yellow bits indicate changed lines (saved/unsaved)
Background color indicates unit section (interface, implementation, 
init-/finitialization
Background also changes for current visible page of the file