It's a complete and utter mess. I added the dirty presets to it.
https://docs.krita.org/Loading_and_Saving_Brushes#The_Brush_Settings_Editor
Okay, here's an outline, help out by picking a section and add the text section as a comment:
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Loading and Saving Brushes
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In the real world, when painting or drawing, you don't just use one tool. You use pencils, erasers, paintbrushes, different types of paint, inks, crayons, etcetera. All these have different ways of making marks.
In a digital program like Krita you have something similar. We call this a brush engine. And much like how cars have different engines that give different feels when driving, or how pencils make distinctly different marks than rollerbal pens, different brush engines have totally different feels.
The brush engines have a lot of different settings as well. So, you can save those settings into presets.
Unlike Photoshop, Krita makes a difference between brush-tips and brush-presets. Tips are only a stamp of sorts, while the preset uses a tip and many other settings to create the full brush.
The Brush settings dropdown
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### Tour of the brush settings dropdown
#### Engine
#### Options
#### Using sensor curves
#### Miscelaneous options
Temporarily Save Tweaks to Preset (Dirty Presets)
: Text
Eraser Switch Size
: Text
Eraser Switch Opacity
: Text
Instant Preview
: Text
#### Scratchpad
###The On-canvas brush settings
Making a Brush Preset
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### Getting a default for the brush engine.
### Example: Making an inking brush
### Saving the new Brush
### Painting the preset icon.
Making a Brush Tip
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Maybe link to the brush-tip resources page here and have that deal with importing/stamps/animated brushes?
Sharing Brushes
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### Sharing a single KPP file
#### Exporting the file.
#### Importing a single KPP file.
### Sharing via ZIP(old fashioned)
#### Creating a ZIP file with the relevant files.
#### Using a ZIP with the relevant files.
### Making a resource bundle
#### Making a resource bundle within Krita
#### Editing a resource bundle within Krita
#### Importing a resource bundle into Krita