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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. The addr is in the form ‘`0x`’ followed by one or more lowercase hex digits (note that this does not depend on the language).