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### 28.7 Displaying Source

The following annotation is used instead of displaying source code:

         ^Z^Zsource filename:line:character:middle:addr

where filename is an absolute file name indicating which source file, line is the line number within that file (where 1 is the first line in the file), character is the character position within the file (where 0 is the first character in the file) (for most debug formats this will necessarily point to the beginning of a line), middle is ‘`middle`’ if addr is in the middle of the line, or ‘`beg`’ if addr is at the beginning of the line, and addr is the address in the target program associated with the source which is being displayed. addr is in the form ‘`0x`’ followed by one or more lowercase hex digits (note that this does not depend on the language).