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+This file describes some features in the Chirp Developer's Functions
+that allow some customization of their behavior, but are only
+accessible through editing the chirp.config file before starting
+Chirp, and are not accessible through the GUI.
+
+The Developer Functions are enabled in the GUI by checking the box
+in  the "Help" tab. They enable the Image Browser tab in the left
+sidebar, several tools under the View -> Developer tab, and some others.
+
+These directives are similar to other chirp.config entries in syntax.
+They reside in the [developer] section in chirp.config.
+This section, and all the directives, are not required to be present;
+all the options have defaults.
+
+Here is an example [developer] section listing all the directives,
+followed by an explanation of each directive:
+
+===================================
+[developer]
+diff_fontsize = 16
+browser_fontsize = 13
+hexdump_addrfmt = %(addr)04i x%(addr)04X
+
+===================================
+browser_fontsize = <integer>
+This specifies the fontsize used in the file browser, invoked by selecting
+the "Browser" tab in the left sidebar, which is visible when the Developer
+tools are enabled.
+
+The default size is 10. Values less than 4, greater than 144, or not
+recognized as an integer will result in a log message and the default 
+size will be used.
+
+========
+diff_fontize = <integer>
+This specifies the fontsize used in the hex dump/diff display which is
+invoked by selecting View -> Developer -> Diff tabs.
+
+The default size is 11. Values less than 4, greater than 144, or not
+recognized as an integer will result in a log message and the default 
+size will be used.
+
+========
+hexdump_addrfmt = <python format specification string>
+This specifies the format of the address printed during some hexdump
+operations. The default is %(addr)03i which prints the byte offset
+of the first byte of each line in decimal, producing lines such as
+ 064: 00 00 00 ...
+
+Any of the variables in local scope of chirp/util.py::hexdump() are
+valid for substitution, including block and block_size. Any may
+be used more than once. The example above, %(addr)04i x%(addr)04X
+produces lines such as
+ 0064 x0040: 00 00 00 ...
+
+0x%(addr)04x specifies lower case hex, and wwould produce lines such as
+ 0x0040: 00 00 00 ...
+
+Exceptions that have been observed in testing formats which are
+invalid in this context are caught, and the default format is used.
+
+========
+
+