Glyph Margin

The Glyph Margin is the vertical bar on the left side of the MPLAB® X editor window that typically displays line numbers. In addition, various glyphs (icons) will occasionally replace the line number to provide status information.


Some of the more common glyphs you are likely to encounter are shown below:

Glyph Description
Current Program Counter (PC) location
Suggestion / Hint
Line Breakpoint
Disabled Line Breakpoint

Hovering the mouse pointer over a glyph will cause a tool tip to pop-up explaining the details behind the glyph's appearance.

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