Adds a string to be displayed in --help output
before the list of options. This is typically a summary of the
program functionality.
Note that the summary is translated (see
g_option_context_set_translate_func() and
g_option_context_set_translation_domain()).
Since 2.12
Adds a string to be displayed in --help output before the list of options. This is typically a summary of the program functionality. Note that the summary is translated (see g_option_context_set_translate_func() and g_option_context_set_translation_domain()). Since 2.12