gimp screenshot annotation basics

 gimp is "overpowered" for everything, and convenient for nothing, unless you know how to do it.  It does not have a discoverable interface.  

When annotating screenshots, there are two main basics: blanking things out by drawing filled rectangles, and drawing attention to things by drawing freehand circles round them in red and writing "WTF".

blanking things out by drawing filled rectangles

Choose rectangle select tool, can be coordinates (2,1) from top-left in toolbox thing. Draw rectangle.  Choose color by clicking the front square of the color-selection squares, and select color.  Drag from color square to the selected rectangle to fill.

drawing thin red freehand lines and writing "WTF"

 This is the tough one.  Often, one selects the pencil tool, draws, and nothing happens.  If something is selected, it might be on a different layer, leading to this total garbage UI artefact.  So choose rectangle select, click somewhere (don't drag), then choose pencil again.  It might now draw.

search-words: black rectangles

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