At program start-up, if the user config directory (`$HOME/.justchords` or `%HOMEPATH%\.justchords`) does not exist, it will be created and populated. In that directory, you will find the following files:

config
  Current options and layout settings; not intended for user modification.
style.css
  The stylesheet controlling fonts and colors; change the font scale by editing these three lines:
  `-fx-font-size: 100%; /* buttons and menus */`
  `font-size: 100%; /* help browser */`
  `-fx-font-size: 100%; /* dialog boxes */`
properties
  Definitions of chord types, default values for various options; user modifiable. You can add chord suffixes here, if desired.
welcomed
  An empty file; its presence suppresses the start-up splash screen display.

There are two ways to change the scale of the keyboard and staff panels: (1) select Options menu, Scale Factors; or (2) hold the CTRL key and drag the mouse left or right in the panel.

You can change the visible portion of the keyboard by holding the SHIFT key while dragging the keyboard. Holding the SHIFT key while dragging in the staff panel will reposition the staff both vertically and horizontally.

Drag the dividers between the upper (keyboard) and lower (main) panels, and between the halves of the main panel, and between the staff panel and the console window to change their relative sizes.

The scale factors, divider positions, and positions of the keyboard and staff are saved to the `config` file at program exit and restored the next time it starts.

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