When GDB is told to display something using the display command,
the results of the display are annotated:
^Z^Zdisplay-begin number ^Z^Zdisplay-number-end number-separator ^Z^Zdisplay-format format ^Z^Zdisplay-expression expression ^Z^Zdisplay-expression-end expression-separator ^Z^Zdisplay-value value ^Z^Zdisplay-end
where number is the number of the display, number-separator is intended to separate the number from what follows for the user, format includes information such as the size, format, or other information about how the value is being displayed, expression is the expression being displayed, expression-separator is intended to separate the expression from the text that follows for the user, and value is the actual value being displayed.
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